P = 5 watt
Explanation:
P = VI
= (10 volt)(0.5 A)
= 5 watt
The electric power developed by the lamp will be 5 watts. Electric power is found by the multiplication of voltage and electric current.
What is electric power?Electric power is the product of the voltage and current. Its unit is the watt.
The given data in the problem is;
The voltage is,V = 10 volt (V)
The electric current is,I = 0.5 ampere (A)
The formula for the power is given as;
[tex]\rm P= V I \\\\\ P= 10 \times 0.5 \\\\ P= 5 \ watt[/tex]
Hence electric power developed by the lamp will be 5 watts.
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A uniform 1.5 T magnetic field points north. If an electron moves perpendicular (90 degrees) with a speed of 2.5x10 ^7 m/s, through this field, what force (magnitude and direction) will act on it?
Answer:
i think its 470
Explanation:
Force=k((q1q1)/r^2)
The force that one electrically charged object exerts on other charged objects can be calculated using Coulomb's law.
You can see this law here written in equation form. The q's represent the two charges, and the r the distance between
the charges. The constant kis 9109
Using this information, calculate the electric force exerted by a +2 coulomb charge on another +2 coulomb charge,
when the charges are 25 meters apart
A)1.44*10^11
B)5.76*10^11
C)8 Newton’s
D)64 Newton’s
Answer:
transferred from one object to another. Charged objects can exert forces on other charged ... Electric charge can be measured using the law for the forces between charges
The electric force exerted by the +2 C on another +2 C when at a distance of 25 m is 5.76×10⁷ N
Coulomb's law equationF = Kq₁q₂ / r²
Where
F is the force of attraction K is the electrical constant q₁ and q₂ are two point charges r is the distance apart How to determine the force Charge 1 (q₁) = 2 CCharge 2 (q₂) = 2 CElectric constant (K) = 9×10⁹ Nm²/C²Distance apart (r) = 25 mForce (F) =?F = Kq₁q₂ / r²
F = (9×10⁹ × 2 × 2) / (25)²
F = 36×10⁹ / 625
F = 5.76×10⁷ N
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Ganymede, the largest of Jupiter’s moons,
is also the largest satellite in the solar system. Find the acceleration of
gravity on Ganymede if a simple pendulum with a length of 1.00 m has a period
of 10.5 s
Answer:hereeee for pointssss only
Explanation:
The acceleration of gravity on Ganymede will be [tex]g=0.35\ \frac{m}{s^2}[/tex]
What will be the acceleration of gravity on Ganymede?It is given that for a simple pendulum on Ganymede
Lenth= 1.00 m
the time period T= 10.5 sec
The formula for a time period of simple pendulum will be
[tex]T=2\pi\sqrt{\dfrac{l}{g} }[/tex]
By rearranging the formula
[tex]g=l\times (\dfrac{2\pi}{T} )^2[/tex]
[tex]g=1\times (\dfrac{2\pi}{10.5} )^2=0.3577\frac{m}{s^2}[/tex]
[tex]g=0.3577\ \frac{m}{s^2}[/tex]
Thus the acceleration of gravity on Ganymede will be [tex]g=0.35\ \frac{m}{s^2}[/tex]
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Water drips from a faucet at the rate of 150 drops in 120 seconds. What is the period?
Answer:
.80
Explanation:
The period of the dripping faucet is 0.8 seconds per drip cycle.
What is the rate?The rate is a measure of how much something changes over time and is typically expressed as a ratio of two quantities with different units of measurement.
Here,
The period of a dripping faucet is the time it takes for one complete drip cycle. To find the period, we need to divide the total time by the number of drip cycles.
In this case, the faucet drips 150 times in 120 seconds, so the time for one drip cycle is,
120 seconds / 150 drips = 0.8 seconds/drip
Therefore, the period of the dripping faucet is 0.8 seconds per drip cycle.
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Ann and Jesse’s mom is driving them to school. They are listening to music on an FM radio station. When they ride in the car with their father, they sometimes listen to AM radio. Ann wants to find out the difference between AM and FM radio signals. She finds a diagram in an online search. How do the AM and FM radio waves compare? In your answer, explain how the wavelength affects the frequency of the radio waves.
Answer:
the difference is that the carrier waves are altered. am waves amplitude (strength) is varied in the signal to get sound information. Fm waves frequency’s are varied based on the carrier signal.
Explanation:
If the temperature (at constant volume) of an ideal gas with 20 K is increased to 60 K, the pressure will be:
increased to 3P
increased to 40P
decreased by 3P
decreased by 40P
Answer:
it will obviously be decreased by 40p
pls somebody help me quick
Answer:
greater than
Explanation:
A bowling ball is bigger than a golf ball and greater than means bigger.
Atmospheric pressure is measured by a device called
Answer:
barometer
Explanation:
Answer:
barometer
Explanation:
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. What will be its horizontal
and vertical velocity?
Guys pls someone answer my question I have an exam and this question has 5 marks
Answer:
Horizontal component = 60.05 m/s
vertical component = 22.96 m/s
Explanation:
cosine(angle) = adjacent / hypotenuse or horizontal / angled velocity
angled velocity * cosine (angle) = horizontal velocity
65 m/s * cosine(22.5) = 60.05 m/s
sine(angle) = adjacent/ hypotenuse or vertical/ angled velocity
angled velocity * sine (angle) = vertical velocity
65m/s sine(22.5) = 22.96 m/s
Seasons occur because _____. Earth is closer to the sun during the summer Earth's orbit is an ellipse Earth's tilt causes the sun's rays to hit unevenly Earth rotates faster at the poles
Answer:
Earth's tilt causes the sun's rays to hit unevenly
Explanation:
The Earth orbit or rotate in it's axis or orbital plane. When it's rotate, it tilt from the sun rays Earth's tilt causes the sun's rays to hit the Earth unevenly Earth's axis is tilted about 23 degrees, which causes a variation or differences in the sun's latitude.causing it to vary by 23 degrees north of the equator at the start of northern summer to 23 degrees south of the equator at the start of northern winter. On Earth, that tilt is the primary reason for different seasons.
How do we calculate efficiency?
Explanation:
Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output ("product") produced per the amount C ("cost") of resources consumed.
i dont know what the answer really is but this is what i think
5 points
The figure below shows two people ice-skating. Person A collides with
person B. After the collision they move together with the same velocity.
Calculate the mass, m, of person B.
Before collision
After collision
Person A
mass = 60 kg
Person B
mass, m
Person A and person B
moving off together
Speed of
Person A -
5.5 m/s
Speed of
Person B -
2.0 m/s
Speed of Person A and
Person B = 4.0 m/s
mB = 45 kg
Explanation:
Using conservation of linear momentum,
mAvA + mbvB = (mA + mB)v
(60 kg)(5.5 m/s) + (2.0 m/s)mB = (60 kg + mB)(4.0 m/s)
(330) + 2mB = 240 + 4mB
2mB = 90
mB = 45 kg
When assessing energy resources, it is helpful to use a measure called EROI, which is ________.
A. energy returned plus energy invested
B. energy returned minus energy invested
C. energy returned divided by energy invested
D. money invested in extraction and processing minus income from sales
Answer: C. energy returned divided by energy invested.
Explanation:
The Energy Return on Investment (EROI) simply means the ratio of the amount of usable energy that is obtained from a particular resource to the amount of the energy that is being expended in order to produce the net amount of the energy.
When assessing energy resources, it is helpful to use a measure called EROI and this is the energy returned divided by energy invested.
Therefore, the correct option is C
A traveler at Newark airport pulls his 294N suitcase with constant velocity to the check-in counter applying a force of 159N at an angle of 37 degrees with the horizontal. Calculate the Normal force, frictional force and the coefficient of friction between the suitcase and the airport floor.
Answer:
N = 198.3 N, fr = 126.98 N and μ = 0.64
Explanation:
For this exercise we must use the translational equilibrium condition.
Let's set a reference system with the x-axis horizontally and the y-axis vertical. Let's use trigonometry to decompose the applied force
cos θ = Fₓ / F
sin θ = F_y / F
Fₓ = F cos θ
F_y = F sin θ
Fₓ = 159 cos 37 = 126.98 N
F_y = 159 sin 37 = 95.69 N
Y axis
N + F_y - W = 0
N = W - F_y
N = 294 - 95.69
N = 198.3 N
X axis
Fₓ -fr = 0
Fₓ = fr
fr = 126.98 N
the expression for the friction force is
fr = μ N
μ = fr / N
μ = 126.98 / 198.3
μ = 0.64
what does the splitting of light into component colours through a prism indicate about the composition of sunlight?
[tex] \huge\longrightarrow{ \mathfrak{ \underline{ Answer }}}[/tex]
The Sunlight is actually white in colour, but it's a mixture of seven different coloured lights of different wavelengths, and when sunlight is passed through a prism, it splits into its constituent units forming a spectrum when observed on a screen. And this shows that the Sunlight is composed of seven different coloured lights .
____________________________
They are :
Red ( highest wavelength )OrangeYellowGreen Blue Indigo Voilet ( lowest wavelength )____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
A bird is standing on an electric transmission line carrying a large amount of current. Find the power dissipated by the bird If the
current it experiences is 1.35^-10 A which results in a potential difference of .0054V.
Side Note:
(I know the answer is 7.3 x 10^-11 W, I just don’t know how to get it)
P = 7.3 × 10^-13 Watt
Explanation:
First of all, are you sure that what you have is the right answer?
Anyway, the definition of power dissipated is given by
P = I^2×R
where I is the current and R is the resistance. But we also know from Ohm's law that
V = IR
so we can rewrite the equation for power P as
P = I^2R = I(IR) = VI
= (0.0054 volt)(1.35 × 10^-10 A)
= 7.3 × 10^-13 Watt
There can be several
in an ecosystem?
A student performed an experiment in the lab and discovered that the material used has a PH of 8.54. What is true about this material
a
it is a base
b
it is an acid
c
more information needed to know if the material is acid or base
The wasted energy in processing food is “lost” to ____.
mechanical energy
light energy
chemical energy
heat energy
The wasted energy in processing food is "lost" to heat energy .
What is heat energy ?The form of energy which is transferred between objects having different temperature is called heat energy.
How heat energy is lost in food processing ?In food processing heat transfer is an essential part. Baking , boiling , grilling , freezing etc . all activities are done for food processing. In all these processes heat energy is lost.Thus, we can conclude that heat energy is wasted in the food processing .
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All eukaryotic cells have mitochondria, but only the cells of photosynthetic organisms have chloroplasts. Explain how what takes place in chloroplasts differs from what takes place in mitochondria (singular = mitochondria).
Answer:
Explanation:
In the chloroplast, photosynthesis occur. The chloroplast capture light energy from the sun and use it with carbondioxide and water to produce glucose and oxygen. Chloroplasts is found in plant cells only
But mitochondria is refer as the power House of the cell. It's break down fuel molecules and produce energy in cellular respiration. Mitochondria is found in both plant and animal cell.
Calculate the critical angle for Zircon which has a refractive index of n = 2*
Answer:
Given that refractive index of the material is √2. i.e. n = √2. Hence, critical angle for the material is 45°
0. The volume of a cube is 27cm3. Find the length of edge of cube.
Answer:
27 cm3
Explanation:
A light wave travels through water (n = 1.33) at an angle of 35°. What angle
does it have when it passes from the water into the glass (n = 1.5)?
ne sin(e)
Use the equation o, = sin
M₂
n, sing )
Answer:
30.6 degrees
Explanation:
A light wave travels through water (n = 1.33) at an angle of 35°. It will have angle of 30.56° when it passes from the water into the glass (n = 1.5).
What is Refractive Index ?When a light is going from medium 1 to medium 2. The refractive index is defined as a ratio of velocity of light in medium 1 to velocity of light in medium 2. Refractive index is the factor which deals with the amount of bending of light. More refractive index means more it will bend in the medium 2. When it is 1 we can say that light has not been bent.
By Snell's law, Refractive index is given by,
sin (i) ÷ sin (r) = μ₂÷μ₁
where i is the the angle of incidence
r is the angle of refraction
μ₂ & μ₁ are refractive index of medium 2 and 1 resp.
Given,
Refractive index of water μ₁ = 1.33
Refractive index of Glass μ₂ = 1.5]
Angle of incidence i = 35°
Angle of refraction r = ?
Light is going from water to glass, hence by snell's law.
sin (i) ÷ sin (r) = μ₂÷μ₁
sin (35°) ÷ sin (r) = 1.5 ÷ 1.33
0.5735 ÷ sin (r) = 1.12781
sin (r) = 0.5735 ÷ 1.12781
r = 30.56°
Hence it passes from the water into the glass at angle of 30.56°.
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can anyone help me please
Answer:
Gravity.
Rocket ships.
Ball.
Basketball.
Explanation:
Gravity has to do a lot with air. It puts the planets in there area.
Rocket Ship has to do a lot with air. If i'm right, they calculate the area, weather, about the air.
A ball gets throwed in the air, which gravity comes into place.
Basketball is also a similar example to a ball.
Suppose you are helping a friend move. The friend asks you stand in the back of a pickup truck to hold a piano because there is no rope available to tie it down. Explain why you should refuse this request.
Explanation:
This exposes the individual to danger. Remember, the Newton Law of motion which says that an object under the state of rest will remain in that state (inertia) unless when acted upon by an external force.
In this scenario, standing at the back of the pickup truck presents danger especially if the truck suddenly stops; this individual would experience an upward thrust due to inertia that may disbalance him.
An alpha particle (the nucleus of a helium atom, carrying a charge of 3.2x10 ^-19 C) moves at 5.5x10 ^7 m/s at a right angle to the magnetic field. If the particle experiences a force of 1.5x10 ^-14 N due to the magnetic field, then what is the magnitude of the magnetic field?
Answer:i think its 7.5
Explanation:
Which two parts do the capillaries surround?
A. small intestines and heart
B. heart and lungs
C. alveoli and small intestines
Answer:
do we have to choose 2 answers here?
Answer:
most probably it's C
Explanation:
alveoli is surrounded by capillaries and whit that option small intestines is also there
an optician uses a plane mirror to help him. suppse a patient sits in a chair 2.5m away from him. He views the image of a chart which faces the mirror and is located 30m behindd him. how far is the chart as viewed by his eyes
Answer:
I think 75 m
Explanation:
tell if it was correct
Make a list of things you pull at home
Please help ASAP. Its for my sister
Answer: Chairs, Plants, Food, electronics, etc.
Explanation: