Answer:
40,000,000 ⇒ scientific notation
= 4 × [tex]10^{7}[/tex]
what is the demand for resources, such as food, water, and shelter.
HELPWhat is the intensity of an electric field at a point where a 0.50 C
charge experiences a force of 20. N?
Remember to identity all of your data, write the equation, and show
your work. (5 points)
Answer:intensity of an electric field (E)
charge (q)
Force (F)
E=F/q
E=20N/.5C
E=40N/C
Explanation:
The Electric field intensity will be 40 N/C
What is an Electric field intensity ?The electric field intensity at a point is the force experienced by a unit positive charge placed at that point.
Electric field intensity(E) = force (F)/ charge(q)
given
charge = 0.50 C
Force = 20 N
Electric field intensity = ?
E = 20 N / 0.50 C
E = 40 N/C
The Electric field intensity will be 40 N/C
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A circle graph shows that one-fourth of the students in a particular school ride the bus every day. What is this equivalent measurement in radians? In degrees?
Answer:
it's 1.57... radians and 90°
As par circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
What is circle graph?Pie charts are another name for circle graphs. The graph is shaped like a circle, with many wedges that each represent a portion of the overall.
The circle graph is commonly referred to as a pie chart since these wedges frequently resemble pie slices. The circle graph's angles are proportionate to the quantity they each represent.
According to circle graph:
Total number of student in the particular school = 2π radian.
So, one-fourth of total number of student in the particular school = 2π/4 radian
= π/2 radian.
Hence, according to circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
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Tarzan is swinging back and forth
on a 6.25 m long vine. What is the
period of his oscillation?
(Unit = s)
Answer:
5.02s
Explanation:
I got it right in acellus :)
The period of the oscillation when Tarzan is swinging back and forth so it should be 5.01 seconds.
Calculation of the period:Since
Length L = 6.25 m
g = 9.8 m/s²
So,
T = 2π√(L/g)
T = 2π√(6.25 / 9.8)
T = 5.01 sec
Hence, The period of the oscillation when Tarzan is swinging back and forth so it should be 5.01 seconds.
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The Law of Octaves is a relationship that can be observed when
elements are ordered by atomic mass. Newlands observed that every
____ element exhibited similar properties.
Answer:
8 elements
Explanation:
It’s right ✌
A 0.78-kg blob of clay strikes a wall at speed 23 m/s. The clay comes to a stop in 0.26 s. What is the average force that the wall exerts on
the clay?
A-69 N
B- 49 N
C- 36 N
D- 55 N
Answer:
A
Explanation:
A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 39 seconds, and reaction B is completed in 50
seconds. What can the student conclude about the rates of these reactions?
A. The rate of reaction A is higher.
B. The rates of reactions A and B are equal.
C. The rate of reaction B is higher.
Answer:
The rate of reaction A is higher.
answer is AAAAA !
Explanation:
Answer: A. The rate of reaction A is higher
Explanation:
What happens to the force between two charged particles if the distance between them is cut in fourth?
Answer: The force between the two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Hence, if the distance between charges is halved (charges remaining kept constant), the force between the two charges is quadrupled.
Explanation: hope i helped c;
What happens to the force between two charged particles if the distance between them is cut in fourth is that the force between the two charges is directly proportional to the product of the charges and proportional to the square of the distance between them.
A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears to be ?
Answer:
60cm
Explanation:
30+30=60
The magnitude of a force is:
A) How fast an object moves when it is pushed
B) How far an object moves when it is pushed
C) how hard an object is pushed or pulled
D) how long it takes to push or pull an object
Answer:
c
Explanation:
force is how hard it is pulled or pushed
Explain How do the attractions between particles in a fluid determine viscosity?
Answer: Viscosity is due to particle mass, particle shape, and the strength of the attraction between the particles of a liquid. In general, the stronger the attractive forces between particles, the higher the viscosity. For many liquids, viscosity decreases when heat is applied.
Explanation:
PLS HELP (50 POINTS) I WILL ALSO MARK BRAINLIEST!!!
A child pulls on wagon with force of 20 N if the wagon models a total of 10 M in four seconds what is the average power generated by the child in watts
Answer:
[tex]power = \frac{(force \times distance)}{(time)} \\ power = \frac{(20 \times 10)}{4} \\ power = \frac{200}{4} \\ power = 50 \: watts[/tex]
What type of friction is it when two students are pushing a box that is at rest
An example of a waste product of cellular respiration is
a]feces
b]oxygen
c]carbon dioxide
d]ammonia
Answer:
(C) Carbon Dioxide!
Explanation:
This is what animals, and even plants, breath out. :)
The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp. For currents up to 0.8 A, the resistance has a constant value of 2.5 Ω.
Calculate the potential difference across the lamp when a current of 0.8 A flows through the lamp.
Answer:
V=IR
V=0.8×2.5
V=2V
where V=potential difference
I=Current
R=Resistance
.........
What is the speed of light in a medium if the index of refraction is 1.57?
Answer:
1.91 × 10⁸ m/s
Explanation:
[tex]n = \frac{c}{v} \\ 1.57 = \frac{3.0 \times {10}^{8} }{v} \\ v = 1.91 \times {10}^{8} \: ms {}^{ - 1} [/tex]
The speed of light in a medium if the index of refraction is 1.57 is 1.91 * 10⁸ m/s
The refractive index of a material is the ratio of speed of light in air to speed of light in the medium. It is given by:
Refractive index(n) = speed of light in air(c) / speed of light in material(v)
Given that n = 1.57, c = 3 * 10⁸ m/s, hence:
n = c/v
1.57 = 3 * 10⁸ / v
v = 1.91 * 10⁸ m/s
The speed of light in a medium if the index of refraction is 1.57 is 1.91 * 10⁸ m/s
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how does the sun rise and set
a.earth orbit around the sun
b.The sun is center of solar system
c.earth rotates on it tilted axis and orbit around the sun at the same time
Answer:
c. earth rotates on it tilted axis and orbit around the sun at the same time
Explanation:
Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.
This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun. Thus, this makes us to experience day and night (sun rise and sun set) due to the rotation of planet about its axis.
Hence, the sun rise and set because the earth rotates on it tilted axis and orbit around the sun at the same time
what force on a 936kg elevator that is falling freely at 9.8 m/s^2
Answer:
9172.8 N
Explanation:
F = ma
F = (936 kg)(9.8 m/s^2)
F = 9172.8 N
4. Find the density of 2750 g of a substance that occupies 250 mL.
what force is required to accelerate to 10 kg object to 5.9 m/s/s?
Force required to accelerate 10 kg object to 5.9 m/s/s ?
Mass = 10 kg
Acceleration = 5.9 m/s^2
Force = Mass * Acceleration
Force = 10 kg * 5.9 m/s^2
Force = 59 kg m /s^2 = 59 N
Is pushing a car across a smooth road positive, negative or zero work?
Some help please :)
At which stage in the life cycle of a star is helium combined to form elements lithium through iron? Explain.
Answer:
Explanation:
During the formation of the universe some 14 billion years ago in the so-called ‘Big Bang’, only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium. As the cloud of cosmic dust and gases from the Big Bang cooled, stars formed, and these then grouped together to form galaxies.
Electromagnetic Spectrum Lab Report
if you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
The dependent variable is the one that changes as a result of the independent variable. The spectrum emitted by the unknown celestial object in this situation.
What is the electromagnetic spectrum?The electromagnetic spectrum refers to the variety of frequencies (the spectrum) of electromagnetic radiation, as well as the wavelengths and photon energies associated with each frequency.
The goal of the electromagnetic spectrum experiment is to determine what elements are present in the atmospheres of the planets and moons by examining their absorption spectrums.
The electromagnetic spectrum encompasses electromagnetic waves with frequencies ranging from below one hertz to above 1025 hertz,
The frequency corresponds to wavelengths ranging from thousands of kilometers to a fraction of an atomic nucleus's size.
The electromagnetic waves within each frequency band are given various names, starting at the low frequency (long wavelength) end of the spectrum.
Hence the dependent variable is the one that changes as a result of the independent variable.
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Answer:
Explanation: Electromagnetic Spectrum Lab Reportif you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!Objectives(s):In your own words, what is the purpose of this lab?Hypothesis:In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
In the universe there are more small stars than large stars. Do you think there are more white dwarfs or black holes? Explain your answer.
Answer: black holes
Explanation:
Kennedy and Lilly are in science class. They are asked to prove that some forces are non-contact
forces. The girls list five examples of objects exerting a force on each other without touching. Do you
agree with their list? Tell why or why not?
1. Two like magnetic poles repel each other.
2. Putting on a wool sweater can make your hair get static electricity when it rubs against the
sweater.
3. When you bring two negatively charged balloons near each other they push each other away.
4. Magnets stick to a refrigerator.
Number 1 and 3 demonstrate non-contact forces because the magnets or electrically charged objects exert
forces on each other without touching.
3 is the only example of non-contact forces since like charges repel each other.
Number 1 and 4 are non-contact forces since they both use magnets.
All four are good examples of non-contact forces since they all use either magnets or electric charge which are
non-contact forces.
Answer:1,3 and 5
Explanation:
Number of protons are equal to the number of electrons
Explanation:
the no of proton of an element is found in the inner part of the orbital of an element along with the neutron ,also knowing that this two add up to give mass no an element
where neutron+proton=mass no=nucleon no,where proton= electron, unless it carries charges call ion
When you blow across the top of a
soda bottle, it acts like a closed
pipe. If the inside of the bottle is
0.150 m long, what is the
fundamental frequency you hear?
(Speed of sound = 343 m/s)
(Unit = Hz)
Answer:
572
Explanation:
Got it right on Acellus, you take the velocity and divide it by 4 times the length.
I need help!!!!!! Somebody help me please!!!!!!!!
A parallel circuit will still work as long as electricity can do what?
Can run through the circuitAnswer:
Explanation:
If a 1.8 m tall man that weighs 90 kg stands next to a 10 kg box resting on the ground, the total work done if he lifts the box to the top of his head will be 2,940 J.
True or False
Answer:
false
Explanation: