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Marat540 [252]
3 years ago
6

What do astronomers mean by light pollution?

Physics
1 answer:
Komok [63]3 years ago
7 0
Light pollution is influence of the light on earth (for example, street lighting) which interrupt observations. For example, if you are in a street during the night and street lights are turned on you won't see stars, but if lighting is turned off or if you go out of town you will see stars above.
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Find the current through a 12 ohm resistive circuit when 24 volts is applied
marusya05 [52]

Answer:

2A

Explanation:

Voltage = Current * Resistance

V= I*R

I=V/R

I = 24/12 = 2A.

5 0
4 years ago
What is air resistance means explain it with free falling body​
NikAS [45]
In freely falling body, there is no force acting on it other than the force of gravity (g).
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3 years ago
In a Compton scattering experiment, scattered photon is found to have its wavelength three times of the incident photon for the
Svetlanka [38]

Answer:

Two of Einstein’s influential ideas introduced in 1905 were the theory of special relativity and the concept of a light quantum, which we now call a photon. Beyond 1905, Einstein went further to suggest that freely propagating electromagnetic waves consisted of photons that are particles of light in the same sense that electrons or other massive particles are particles of matter. A beam of monochromatic light of wavelength \lambda (or equivalently, of frequency f) can be seen either as a classical wave or as a collection of photons that travel in a vacuum with one speed, c (the speed of light), and all carrying the same energy, {E}_{f}=hf. This idea proved useful for explaining the interactions of light with particles of matter.

5 0
3 years ago
. Set the applied force to Force necessary to Keep the box Moving without accelerating. Restart the animation. Just before the b
Arte-miy333 [17]

Answer:

elative magnitude of the two forces is the same and they are applied in a constant direction.

Explanation:

Newton's second law states that the sum of the forces is equal to the mass times the acceleration  

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in this case there are two forces on the x axis

             F_applied - fr = 0

since they indicate that the velocity is constant, consequently

             F_applied = fr

the relative magnitude of the two forces is the same and they are applied in a constant direction.

3 0
3 years ago
9. How does the length of the hypotenuse in a right triangle relate to the lengths of the legs? (2 points)
konstantin123 [22]
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6 0
3 years ago
Read 2 more answers
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