Answer:
Electrical - electric forces between atoms are responsible for reactions between the atoms
Nuclear forces are not directly involved when 2 atoms of Oxygen combine to form a molecule of O2 or an atom of Sodium combines with an atom of Chlorine to form NaCL (table salt)
when a high voltage is applied to a low-pressure gas, causing it to glow, it will emit what type of spectrum? a. li
When a high voltage is applied to a low-pressure gas and it starts to glow, it will emit an emission line spectrum.
This spectrum consists of bright, narrow lines at specific wavelengths, which are characteristic of the element or molecules in the gas. This is due to the electrons in the gas being excited to higher energy levels and then falling back down to lower energy levels, emitting photons of light at specific wavelengths corresponding to the energy differences between the levels. The resulting emission spectrum can be used to identify the elements or molecules present in the gas.
Learn more about spectrum
https://brainly.com/question/6836691
#SPJ4
What specific evidence does Norton offer for her
belief?
the fundamental, resonant wavelength of a pipe open at both ends that is 1 m long and 0.1 m in diameter is:
The fundamental resonant wavelength of a 1-meter long pipe open at both ends is 2 meters.
To find the fundamental resonant wavelength of a pipe open at both ends, we can use the formula:
Wavelength = 2 * Length of the pipe / Harmonic number
Since you're looking for the fundamental resonant wavelength, the harmonic number (n) is 1.
Given that the length of the pipe (L) is 1 meter:
Wavelength = 2 * 1 / 1
Wavelength = 2 meters
So, the fundamental resonant wavelength of a 1-meter long pipe open at both ends is 2 meters. The diameter of the pipe (0.1 meters) doesn't affect the wavelength in this case.
More on wavelength: https://brainly.com/question/31174532
#SPJ11
a motorcycle passing by your apartment emits a sound with an intensity level of 70 db. if two identical motorcycles passed by together, what would be the intensity level of the resulting sound?
The intensity level of the resulting sound is approximately 73 dB, the correct option is (e)
To calculate the intensity level of the resulting sound, we use the formula:
L = 10 log(I ÷ I0)
where L is the intensity level in decibels, I is the intensity of the sound wave in watts per square meter, and I0 is the reference intensity, which is equal to 1 x 10⁻¹² watts per square meter.
Since the motorcycles emit identical sound waves, the intensity of each wave is the same. We can calculate the intensity of a single motorcycle's sound wave using the formula:
I = [tex](10^{L/10} )[/tex] x I0
where L is the intensity level of the sound wave in decibels. Substituting L = 70 dB and I0 = 1 x 10⁻¹² watts per square meter, we get:
I = (10⁷) x 1 x 10⁻¹²
= 1 x 10⁻⁵ watts per square meter
To calculate the intensity level of the resulting sound, we use the formula:
L = 10 log(2I ÷ I0)
where 2I is the intensity of the sound waves produced by two identical motorcycles. Substituting I = 1 x 10⁻⁵ watts per square meter and I0 = 1 x 10⁻¹² watts per square meter, we get:
2I = 2 x 1 x 10⁻⁵
= 2 x 10⁻⁵ watts per square meter
L = 10 log(2 x 10⁻⁵ ÷ 1 x 10⁻¹²)
= 10 log(2 x 10⁷)
= 10 (7.301)
= 73.01 dB
Therefore, the correct option is (e)
To learn more about intensity follow the link:
https://brainly.com/question/17583145
#SPJ4
The complete question is:
A motorcycle passing by your apartment emits a sound with an intensity level of 70 dB. If two identical motorcycles passed by together, what would be the intensity level of the resulting sound?
a. 80 dB
b. 140 dB
c. 103 dB
d. 70 dB
e. 73 dB
Where do sound waves travel faster? (1 point)
Responses
A. through denser materials, because the molecules in a tightly packed medium collide more frequently
B. through less dense materials, because the molecules in a loosely packed medium collide less frequently
C. through denser materials, because the molecules in a tightly packed medium collide less frequently
D. through less dense materials, because the molecules in a loosely packed medium collide more frequently
Sound waves travel faster through denser materials, because the molecules in a tightly packed medium collide more frequently (option A)
What are Sound waves?Sound waves are a type of mechanical wave that propagate through a medium, such as air, water, or solids, by causing the molecules of the medium to vibrate back and forth in the direction of the wave's motion.
These vibrations create changes in pressure that move through the medium, ultimately reaching our ears and allowing us to perceive sound. Sound waves can have different properties such as frequency, wavelength, amplitude, and speed, which determine the characteristics of the sound that we hear.
Learn about sound waves here https://brainly.com/question/13105733
#SPJ1
waves on a particular string travel with a velocity of 10 m/s. a high-speed photograph shows that successive peaks are 0.50 m apart along the string. the frequency of the waves is:
The frequency of the waves on the string is 20 Hz.
The velocity of waves on a string is given by the equation:
v = λf
where v is the velocity of the wave, λ is the wavelength, and f is the frequency of the wave.
We are given that the velocity of waves on the string is 10 m/s and that successive peaks (or troughs) are 0.50 m apart. This distance is equal to the wavelength (λ) of the wave. Therefore, we can write:
λ = 0.50 m
Substituting this value and the given velocity into the equation above, we get:
10 m/s = (0.50 m) f
Solving for f, we get:
f = 10 m/s / 0.50 m = 20 Hz
To know more about Velocity:
https://brainly.com/question/30559316
#SPJ4
Which of these objects is an insulator?
b. copper coin
d. steel fork
a. gold ring
C. glass rod
Answer:
C
Explanation:
Glass is one of the objects included in an insular so glass rod will be the final ans.
what is the principal difference between a radio wave and visible light? between visible light and an x-ray?
The principal differences between radio waves, visible light, and X-rays involve their wavelengths, frequencies, and energy levels.
1. Radio wave vs. visible light:
- Wavelength: Radio waves have much longer wavelengths compared to visible light. Radio wave wavelengths can range from 1 millimeter to 100 kilometers, while visible light wavelengths are between 380-750 nanometers.
- Frequency: Radio waves have lower frequencies than visible light. Lower frequencies correspond to longer wavelengths.
- Energy: Radio waves carry less energy than visible light due to their lower frequencies.
2. Visible light vs. X-ray:
- Wavelength: Visible light has longer wavelengths compared to X-rays. Visible light wavelengths range between 380-750 nanometers, while X-ray wavelengths are between 0.01-10 nanometers.
- Frequency: Visible light has lower frequencies compared to X-rays. Higher frequencies correspond to shorter wavelengths.
- Energy: Visible light carries less energy than X-rays due to their lower frequencies.
In summary, radio waves have the longest wavelengths and lowest energy, visible light has intermediate wavelengths and energy, and X-rays have the shortest wavelengths and highest energy.
More on waves: https://brainly.com/question/4266492
#SPJ11
imagne that your friends cat was cloned. would it be the same
If my friend's cat was cloned, the resulting cat would be genetically identical to the original cat. However, this does not mean that the cloned cat would be exactly the same as the original cat in terms of its behavior, personality, or even appearance.
Environmental factors and experiences can have a significant impact on an animal's development and behavior, so even genetically identical cats can have differences in their behavior and personality. Additionally, the cloning process itself can introduce some genetic and epigenetic changes that may affect the cloned cat's development and behavior. Therefore, while the cloned cat may look and behave similarly to the original cat, it would not be exactly the same.
Learn more about Environmental factors
https://brainly.com/question/29517743
#SPJ4
PLEASE ANSWER ASAP
1. How many atoms are present in 8.500 mole of chlorine atoms?
2. Determine the mass (g) of 15.50 mole of oxygen.
3. Determine the number of moles of helium in 1.953 x 108 g of helium.
4. Calculate the number of atoms in 147.82 g of sulfur.
5. Determine the molar mass of Co.
6. Determine the formula mass of Ca3(PO4)2.
IT WOULD BE HELPFUL
The number of atoms in 147.82 g of sulphur is 2.772 x 10²⁴. In 1.953 x 10⁸ g of helium, there are 4.883 × 10⁷ moles of helium. 15.50 moles of oxygen weigh 248 g. Calcium phosphate's formula mass would be 310.18 g/mol.
How many atoms make up 1 gramme?The quantity of atoms or molecules per gramme of atomic weight is known as Avogadro's number, which is 6.022 × 10²³/mole. One mole of hydrogen comprises 6.022 × 10²³ hydrogen atoms for one gramme of hydrogen with an atomic weight of one gramme.
The Avogadro's number states that 1 mole of any substance contains 6.022 x 10²³ particles. Therefore, 8.500 moles of chlorine atoms would contain:
8.500 moles * 6.022 x 10²³ atoms/mole = 5.1167 x 10²⁴ atoms of chlorine.
The molar mass of oxygen is 16.00 g/mol. Therefore, 15.50 moles of oxygen would have a mass of:
15.50 moles * 16.00 g/mol = 248 g
So the mass of 15.50 mole of oxygen is 248 g.
The molar mass of helium is 4.00 g/mol. Therefore, 1.953 x 10⁸ g of helium would contain:
1.953 x 10⁸ g / 4.00 g/mol = 4.883 x 10⁷ moles of helium.
The molar mass of sulfur is 32.06 g/mol. Therefore, 147.82 g of sulfur would contain:
147.82 g / 32.06 g/mol = 4.6055 moles of sulfur. Therefore, the formula mass of Calcium phosphate would be:
(340.08 g/mol) + (230.97 g/mol) + (8*16.00 g/mol) = 310.18 g/mol.
To know more about formula visit:-
https://brainly.com/question/29792091
#SPJ1
two objects collide under conditions where total momentum is conserved. is the momentum conserved for each object?
Yes, the momentum is conserved for each object in a collision where total momentum is conserved.
This means that the momentum of each individual object before the collision will equal the momentum of that same object after the collision, but in the opposite direction. This conservation of momentum is a fundamental law of physics, stating that in a closed system, the total momentum remains constant unless acted upon by an external force. Yes, each object in the impact maintains its momentum. This is due to the law of conservation of momentum, which stipulates that the overall momentum of a closed system—in this case, the collision of the two objects—remains constant before and after the collision. Every object must conserve its momentum because it is a component of the closed system and is part of the overall momentum. As a result, in the collision, each object's momentum is preserved.
learn more about collision here:
https://brainly.com/question/30636941
#SPJ11
Yes, the momentum is conserved for each object in a collision where total momentum is conserved.
This means that the momentum of each individual object before the collision will equal the momentum of that same object after the collision, but in the opposite direction. This conservation of momentum is a fundamental law of physics, stating that in a closed system, the total momentum remains constant unless acted upon by an external force. Yes, each object in the impact maintains its momentum
. This is due to the law of conservation of momentum, which stipulates that the overall momentum of a closed system—in this case, the collision of the two objects—remains constant before and after the collision. Every object must conserve its momentum because it is a component of the closed system and is part of the overall momentum. As a result, in the collision, each object's momentum is preserved.
learn more about collision here:
brainly.com/question/30636941
#SPJ4
A 75. 0-kg ice skater moving at 10. 0 m/s crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 5. 00 m/s. Suppose the average force a skater can experience without breaking a bone is 4 500 N. If the impact time is 0. 100 s, does a bone break?
In this case, a skater can experience without breaking a bone (4,500 N), a bone will not break in this collision.
We can use conservation of momentum to calculate velocity of skaters after collision:
[tex](m1 * v1) + (m2 * v2) = (m1 + m2) * vf[/tex]
Plugging in the values, we get:
[tex](75.0 kg * 10.0 m/s) + (75.0 kg * 0 m/s) = (75.0 kg + 75.0 kg) * 5.00 m/s \\750.0 kgm/s = 750.0 kgm/s[/tex]
Therefore, the velocity after collision is 5.00 m/s.
We can use the impulse-momentum theorem:
J = Δp = F * Δt
Δp = (m1 + m2) * vf - (m1 * v1 + m2 * v2)
[tex]= (75.0 kg + 75.0 kg) * 5.00 m/s - (75.0 kg * 10.0 m/s + 75.0 kg * 0 m/s) \\= 750.0 kgm/s - 750.0 kgm/s \\= 0 kg*m/s[/tex]
Thus, the force exerted on the skaters during the collision is:
F = J / Δt
= 0 / 0.100 s
= 0 N
Since the force exerted on the skaters during the collision is zero, a skater can experience without breaking a bone.
To know more about impulse-momentum, here
brainly.com/question/904448
#SPJ4
a workman carries some lumber up a staircase. the workman moves 9.6 m vertically and 22 m horizontally. if the lumber weighs 45 n, how much work was done by the workman?
The total work done by the workman was 432 joules
The workman lifted the lumber a vertical distance of 9.6 m, which means he did work against gravity. The amount of work done is equal to the force (weight of the lumber) multiplied by the distance it was lifted:
Work = force x distance
Work = 45 N x 9.6 m
Work = 432 joules
In addition to lifting the lumber, the workman also moved it horizontally a distance of 22 m. However, since the lumber was not lifted or lowered during this movement, no work was done against gravity.
Therefore, this distance does not affect the amount of work done by the workman.
To learn more about : work
https://brainly.com/question/30121704
#SPJ11
sunlight shining through a thin, cool gas produces a(n) continuous spectrum. emission line spectrum. absorption line spectrum.
Sunlight shining through a thin, cool gas produces an absorption line spectrum.
Which spectrum does sunlight shining through a thin, cool gas produces?When white light passes through a thin, cool gas, some of the light is absorbed by the gas atoms, causing dark lines to appear in the spectrum known as an absorption spectrum. These dark lines represent the wavelengths of light that were absorbed by the gas. This type of spectrum is known as an absorption line spectrum. In the case of sunlight passing through Earth's atmosphere, the gases in the atmosphere absorb specific wavelengths of light, creating a series of dark lines in the spectrum. These dark lines are called Fraunhofer lines and are used to identify the chemical composition of the Sun and other stars.
Learn more about absorption line spectrum
brainly.com/question/31040837
#SPJ11
in terms of db , how much louder will the more powerful amplifier be when both are producing sound at their maximum levels?
The increase in decibels (dB) when comparing the more powerful amplifier to the less powerful one will depend on the specific amplifiers being compared. Generally, a doubling of amplifier power will result in a 3dB increase in sound output.
Therefore, if the more powerful amplifier is twice as powerful as the less powerful one, it will produce a 3dB increase in sound output when both are producing sound at their maximum levels. However, if the difference in power between the two amplifiers is greater or less than a factor of two, the increase in dB will be different.
1. Decibels (dB): A logarithmic unit used to express the ratio of two values of a physical quantity, often used to measure sound levels.
2. Amplifier: An electronic device that increases the power of a signal, typically used for audio purposes.
3. Sound Pressure Level (SPL): A measure of the sound pressure of a sound wave relative to a reference value, usually expressed in decibels (dB).
Now, let's go through the steps to compare the loudness of two amplifiers at their maximum levels:
Find the power output (in watts) of both amplifiers at their maximum levels. You'll need this information to proceed with the calculation.
Calculate the difference in decibels (dB) between the two amplifiers using the following formula:
dB difference = 10 * log10(Power Amplifier 1 / Power Amplifier 2)
Where Power Amplifier 1 and Power Amplifier 2 are the power outputs of the two amplifiers in watts.
Interpret the result. A positive dB difference indicates that Amplifier 1 is louder than Amplifier 2, while a negative dB difference indicates that Amplifier 2 is louder. The larger the absolute value of the dB difference, the greater the difference in loudness between the two amplifiers.
More on amplifier: https://brainly.com/question/26252359
#SPJ11
how are the masses of supermassive black holes related to the masses of the bulges of their surrounding galaxies and what does this suggest about the role of supermassive black holes in galaxy evolution.
Supermassive black holes are closely related to galactic evolution through their tightly correlated masses with galactic bulges.
How do supermassive black holes and galactic bulges relate, and what does this mean for galaxy evolution?Observations have shown that there is a tight correlation between the mass of the supermassive black hole (SMBH) at the center of a galaxy and the mass of the galactic bulge. This correlation, known as the M-sigma relation, suggests that the formation and evolution of SMBHs and galactic bulges are closely linked.
The M-sigma relation suggests that the growth of the SMBH and the galactic bulge are linked through a process known as "feedback." Feedback occurs when energy or matter is expelled from the central region of the galaxy by the SMBH, which then interacts with the gas and dust in the surrounding region, either preventing or enhancing the formation of new stars. This process helps regulate the growth of both the SMBH and the galactic bulge and also influences the overall evolution of the galaxy.
Furthermore, studies have also shown that the M-sigma relation holds not only for nearby galaxies but also for distant, high-redshift galaxies, suggesting that the correlation between SMBHs and galactic bulges has been in place for most of cosmic history. This highlights the important role that SMBHs play in shaping the evolution of galaxies over time.
Overall, the M-sigma relation and other related observations provide strong evidence for a symbiotic relationship between SMBHs and galactic bulges and suggest that these massive black holes play a crucial role in the formation, evolution, and regulation of their host galaxies.
Learn more about black holes
brainly.com/question/10597324
#SPJ11
if one-third of this energy goes into heat and other forms of internal energy of the motor, with the rest going to the motor output, how much torque will this engine develop if you run it at 2400 rpm ?
The engine will develop a torque of 475.47 N·m when run at 2400 rpm.
The torque developed by an engine can be calculated using the formula:
Torque = Power / (2π × RPM / 60)
where power is the net power output of the engine and RPM is the speed of the engine in revolutions per minute.
Given that the engine produces 75 kW of power, one-third of which goes into heat and other forms of internal energy, the net power output would be:
Net power = 75 kW × (1 - 1/3) = 50 kW
Converting the engine speed of 2400 rpm to radians per second gives:
ω = 2400 rpm × (2π / 60) = 251.33 rad/s
Substituting the values into the torque formula:
Torque = 50,000 W / (2π × 251.33 / 60) = 475.47 N·m
Learn more about internal energy, https://brainly.com/question/14668303
#SPJ4
if a star located 45 light years away from us exploded today, how long would it take before we can see the explosion?
The light from an explosion 45 light-years distant from us would take 45 years to get to us if it happened today. This is because light travels at a constant speed of about 9.46 trillion kilometers in one year (this is also known as a light-year).
A light-year is a unit of distance used to measure the vast distances between celestial objects in space. It is the distance that light travels in one year, which is approximately 9.46 trillion kilometers or 5.88 trillion miles.
To put it into perspective, if we were to travel at the speed of light (which is impossible according to our current understanding of physics), it would take us one year to travel one light-year. This means that the light we see from the stars in the night sky has taken many years to reach us, and some of the stars we see may not even exist anymore. The concept of a light-year is crucial to our understanding of the universe and helps astronomers measure the distances between celestial objects such as stars, galaxies, and quasars.
To learn more about Light-years visit here:
brainly.com/question/771827
#SPJ4
if the human body has an average density of 983 kg/m3 , what fraction of a person is submerged when floating gently in fresh water?
Roughly half of a person's body is submerged when they are floating gently in fresh water.
When an object is floating in water, it displaces an amount of water equal to its weight. If the weight of the displaced water is greater than the weight of the object, the object will float, and if it is less, the object will sink.
The fraction of a person that is submerged while floating in fresh water depends on the ratio of their weight to the weight of the water displaced by their body.
Assuming that the volume of a person is constant, we can calculate the weight of a person as:
Weight = density x volume x gravity
where:
density = 983 [tex]kg/m^3[/tex] (average density of human body)
volume = the volume of a person (assumed to be constant)
gravity = 9.81 [tex]m/s^2[/tex] (acceleration due to gravity)
Let's assume the weight of a person is 70 kg, then their volume would be:
Volume = Weight / (density x gravity)
Volume = 70 / (983 x 9.81)
Volume = 0.00716 [tex]m^3[/tex]
Now, let's consider the weight of the water displaced by the person's body. The weight of the water displaced is equal to the weight of the person, which is 70 kg.
Therefore, the fraction of the person's body that is submerged in water is:
Fraction submerged = Weight of water displaced / Total weight
Fraction submerged = 70 / (70 + weight of water in the submerged part of the body)
Since the person is floating gently in water, we can assume that only a small part of their body is submerged, and we can neglect the weight of water in the submerged part of the body.
Thus, we can approximate the fraction submerged as:
Fraction submerged ≈ Weight of water displaced / Total weight
Fraction submerged ≈ 70 / (70 + 70)
Fraction submerged ≈ 0.5 or 50%
Therefore, roughly half of a person's body is submerged when they are floating gently in fresh water.
Learn more about submerged
https://brainly.com/question/30690757
#SPJ4
a load that will convert all of the delivered power into another form of energy is a(n) _____ load.
A load that will convert all of the delivered power into another form of energy is called a "pure" or "matched" load.
When a power source, such as a generator or battery, is connected to a load, the load will convert some of the electrical energy into another form, such as heat, light, or mechanical energy.
However, not all loads are able to convert all of the delivered power into another form of energy.
Some of the power may be reflected back towards the source or dissipated in the form of electromagnetic waves.
A pure or matched load is a type of load that is designed to match the impedance of the source, meaning that the load resistance is equal to the source resistance.
When a pure load is connected to a power source, all of the delivered power will be converted into another form of energy, without any power being reflected back towards the source.
To summarize, a load that will convert all of the delivered power into another form of energy is a pure or matched load
To know more about load :
https://brainly.com/question/31393348
#SPJ11
what focal length of corrective lens should this person use to make the far point distance infinite?
To determine the focal length of a corrective lens required to make the far point distance infinite, we need to follow these steps:
1) Measure the person's far point distance: This can be done by having the person read letters on an eye chart or by using a refractometer.
Let's assume the person's far point distance is 3 meters.
2) Determine the person's current corrective lens prescription: If the person already wears corrective lenses, their current prescription can be used to calculate the required focal length of the corrective lens.
If they do not wear corrective lenses, this step can be skipped.
3) calculate the person's current refractive error: This can be done by subtracting the measured far point distance from infinity (1/∞) and converting the result to diopters.
For example, if the person's far point distance is 3 meters, their refractive error would be -0.33 diopters (1/3m = 0.33 D).
4) Determine the focal length of the corrective lens required to make the far point distance infinite: This can be done by adding the person's refractive error to the desired focal length of infinity (1/0 = 0 D).
For example, if the person's refractive error is -0.33 diopters, the required focal length of the corrective lens would be 0.33 meters or 33 centimeters.
Therefore, the person would need a corrective lens with a focal length of 33 centimeters to make their far point distance infinite.
To know more about focal length of a corrective lens :
https://brainly.com/question/13885819
#SPJ11
. Ima shoved a box horizontally over the end of a cliff. The initial velocity was 10m/s and it took 5.4s to hit
the ground.
+ How tall was the cliff?
+ How far away from the base of the cliff did the box fall?
Based on the provided initial velocity; The cliff was approximately 143.1 meters tall., The box fell approximately 54 meters away from the base of the cliff.
How to solve the questions on velocity?To find the height of the cliff, we can use the following kinematic equation for vertical motion:
y = y0 + v0_yt + 0.5a_y*t⁻².
where:
y = final vertical position
y0 = initial vertical position (0, since we start from the top of the cliff)
v0_y = initial vertical velocity (0, since the box is shoved horizontally)
a_y = vertical acceleration (9.81 m/s², due to gravity)
t = time (5.4 seconds)
Plugging in the values, we get:
y = 0 + 05.4 + 0.59.815.4²
y = 0.59.8129.16
y = 4.90529.16
y = 143.1 m
To find how far away the box fell from the base of the cliff, we can use the following equation for horizontal motion:
x = x0 + v0_x*t
where:
x = final horizontal position
x0 = initial horizontal position (0, since we start from the edge of the cliff)
v0_x = initial horizontal velocity (10 m/s)
t = time (5.4 seconds)
Plugging in the values, we get:
x = 0 + 10*5.4
x = 54 m
To know more about initial velocity visit:-
brainly.com/question/14295901
#SPJ1
A car with a mass of 1000 kg is traveling east at 4 m/s. Another car with a mass of 500 kg is traveling west at a speed of 3 m/s. The two cars collide. After the collision, the 1000 kg car has a velocity of 1 m/s east. What is the velocity of the 500 kg car after the collision?
Answer: the velocity of the 500 kg car after the collision is 3 m/s to the east.
Explanation:
Initial momentum = (mass of car 1 x velocity of car 1) + (mass of car 2 x velocity of car 2)
Initial momentum = (1000 kg x 4 m/s) + (500 kg x -3 m/s) (Note that we use a negative velocity for car 2 because it is traveling in the opposite direction)
Initial momentum = 4000 kg m/s - 1500 kg m/s = 2500 kg m/s
After the collision, the total mass and total momentum of the system remain the same.
Final momentum = (mass of car 1 x velocity of car 1) + (mass of car 2 x velocity of car 2)
Final momentum = (1000 kg x 1 m/s) + (500 kg x v) (where v is the velocity of the 500 kg car after the collision)
Final momentum = 1000 kg m/s + 500v
Since the total momentum is conserved, we can set the initial momentum equal to the final momentum:
Initial momentum = Final momentum
2500 kg m/s = 1000 kg m/s + 500v
Solving for v, we get:
v = (2500 kg m/s - 1000 kg m/s) / 500 kg
v = 3 m/s
??
A book sitting on a desk with the surface area of the cover of .05 m^2. The atmospheric pressure is 100kPa. What is the downward force of the atmosphere on the book?
Answer:Force=500
Explanation:
Because it say "the downward force of atmosphere" we use ATP
ATP=100kpa
area=0.05m2
F=ATP × area
100,000pa×0.05m2 =5000N
if the mediterranean sea is 2520 km at most between europe and africa, and it is closing at a rate of 4.87 cm per year; how many years until the mediterranean no longer exists on the planet?
The time needed for the Mediterranean to no longer exist on the planet is approximately 51,745,380 years. The result is obtained by using the formula for speed.
Speed and TimeTo calculate the number of years until the Mediterranean no longer exists on the planet, we need to use the formula:
Time = Distance/Speed
In this case, the distance is 2,520 km and the speed of closing to each other is 4.87 cm per year. We need to convert the units of distance and speed to be consistent.
Distance = 2,520 km
Distance = 2,520 × 1,000 meters
Distance = 2,520,000 meters
Speed = 4.87 cm per year
Speed = 4.87 ÷ 100 meters per year
Speed = 0.0487 meters per year
Plugging these values into the formula, we get:
Time = 2,520,000/0.0487
Time = 51,745,379.87 years
Time ≈ 51,745,380 years
Hence, it will take approximately 5,178,695 years until the Mediterranean no longer exists on the planet, assuming that the current rate of closure remains constant.
Learn more about speed here:
brainly.com/question/30506212
#SPJ11
1. which angular velocity was non-zero and what was the sign? explain how this makes sense given the right-hand rule for the angular velocity.
Clockwise angular velocity was non-zero and had a positive sign. So, the correct answer is D.
The right-hand rule for angular velocity asserts that if the right hand's thumb is pointing in the direction of the axis of rotation, then the direction of the angular velocity vector is given by the direction in which the right hand's fingers curl.
This makes sense in this situation. As a result, the angular velocity vector will point in the same direction as the rotation's axis, and it will be positive when the angular velocity is positive.
In physics, engineering, and other sciences, the right-hand rule for angular velocity is a helpful tool for visualising the direction of the angular velocity vector.
This rule allows us to quickly ascertain the direction and sign of the angular velocity in any given situation.
Complete Question:
Which angular velocity was non-zero and what was the sign? Explain how this makes sense given the right-hand rule for the angular velocity.
A. Counterclockwise, Positive
B. Clockwise, Negative
C. Counterclockwise, Negative
D. Clockwise, Positive
To learn more about velocity visit:
https://brainly.com/question/80295
#SPJ4
what is the wavelength of a radio photon from an am radio station that broadcasts at 1270 kilohertz? express your answer to three significant figures and include the appropriate units.
The wavelength of a radio photon from an AM radio station broadcasting at 1270 kilohertz is 236 meters.
To find the wavelength of a radio photon from an AM radio station broadcasting at 1270 kilohertz, we can use the formula:
wavelength (λ) = speed of light (c) / frequency (f)
1. First, we need to convert the frequency from kilohertz to hertz:
1270 kilohertz = 1270 * 10³ hertz = 1,270,000 hertz
2. Next, we will use the speed of light, which is approximately 3.00 * 10⁸ meters per second (m/s).
3. Now, we can plug in the values into the formula:
wavelength (λ) = (3.00 * 10⁸ m/s) / (1,270,000 Hz)
4. Calculate the wavelength:
λ ≈ 236.22 meters
5. Finally, express the answer to three significant figures and include the appropriate units:
λ ≈ 236 meters
Learn more about wavelength:
https://brainly.com/question/10750459
#SPJ11
what is the distance the masses on the right of the fulcrum need to be to balance with the two masses on the left?
Distance the masses on the right of the fulcrum need to be to balance with the two masses on the left is (3.5kgm - x kg * d m) / 1kg
In order for a lever to be balanced, the moments on either side of the fulcrum need to be equal. The moment is calculated by multiplying the distance from the fulcrum by the mass of the object. Therefore, to balance the two masses on the left of the fulcrum with the masses on the right, we need to calculate the moment on each side and make them equal.
Let's assume the masses on the left of the fulcrum are 2kg and 3kg, and the masses on the right are x kg and y kg, respectively. If the distance between the fulcrum and the 2kg mass is 1m, and the distance between the fulcrum and the 3kg mass is 0.5m.
we can calculate the moments on each side as follows:
Moment on the left side = 2kg x 1m + 3kg x 0.5m = 2kg + 1.5kg = 3.5kgm
Moment on the right side = x kg * d m + y kg * e m
where d and e are the distances between the fulcrum and the masses on the right.
To make the moments equal, we can set them equal to each other:
3.5kgm = x kg * d m + y kg * e m
If we know the mass of one of the objects on the right, we can solve for the distance needed for the other mass to balance the lever. For example, if we know the mass of the object closest to the fulcrum is 1kg.
we can rearrange the equation to solve for e:
e = (3.5kgm - x kg * d m) / 1kg
Once we know the distance needed for the other mass, we can set up the lever accordingly and it should be balanced.
The Question was Incomplete, Find the full content below :
A balanced lever has two weights on it, the masses on the left of the fulcrum are 2kg and 3kg, and the masses on the right are x kg and y kg. If the distance between the fulcrum and the 2kg mass is 1m, and the distance between the fulcrum and the 3kg mass is 0.5m.what is the distance the masses on the right of the fulcrum need to be to balance with the two masses on the left?
know more about mass of the object here:
https://brainly.com/question/1882842
#SPJ11
A man pushes a box across a floor. As he increases the force he applies horizontally to the box
the kinetic friction increases
the kinetic friction may increase or decrease depending on the velocity of the box
the kinetic friction decreases
the kinetic friction remains the same
a 1 meter long solenoid with 200 turns carries 2a of current . calculate the magnetic field on axis.
The magnetic field on the axis of the solenoid is 5.03 × 10⁻⁴ T.
The magnetic field on the axis of a solenoid can be calculated using the formula:
B = μ₀ * n * I
Where B denotes the intensity of the magnetic field, 0 denotes the permeability of empty space, n denotes the number of turns per unit length, and I is the current flowing through the solenoid.
In this case, the solenoid is 1 meter long and has 200 turns, so n = 200 turns / 1 meter = 200 turns/meter. The solenoid is delivering 2A of current.
The value of μ₀ is a constant, equal to 4π × 10⁻⁷ T·m/A
When we enter these values into the formula, we get:
B = μ₀ * n * I
= 4π × 10⁻⁷ T·m/A * 200 turns/m * 2A
= 5.03 × 10⁻⁴ T
Therefore, the magnetic field on the axis of the solenoid is 5.03 × 10⁻⁴ T.
Learn more about magnetic field
https://brainly.com/question/14848188
#SPJ4
magnetic field on the axis of the solenoid is approximately 0.005 T
Solution - Hi! To calculate the magnetic field on the axis of a solenoid, you can use the formula:
Magnetic field (B) = μ₀ * n * I . (applicable for ideal long solenoid)
where μ₀ is the permeability of free space (approximately 4π x 10^-7 Tm/A), n is the number of turns per unit length, and I is the current.
In your case, the solenoid is 1 meter long with 200 turns and carries a 2 A current. To find n, divide the number of turns by the length:
n = 200 turns / 1 m = 200 turns/m
Now, plug the values into the formula:
B = (4π x 10^-7 Tm/A) * (200 turns/m) * (2 A)
B ≈ 0.005 T
The magnetic field on the axis of the solenoid is approximately 0.005 T (Tesla).
To learn more about solenoid, click on this
brainly.com/question/22043434
#SPJ11