A.) Which of these statements are true? MULTIPLE ANSWERS a.) The speed of light

Question

A.) Which of these statements are true? MULTIPLE ANSWERS

a.) The speed of light is the same seen by any observer anywhere in the universe

b.) The speed of light is approximately  299,792,458 m/s and is uncertain to about 1 m/s

c.) The speed of light is exactly 299,792,458 m/s

d.) If you are driving along at 100 km/hr, the light leaving your headlights is moving away from your car at 100 km/hr (0.0277 km/s) plus plus the speed of light,

B.)

What does Special Relativity tell us about physics in Nature? PICK ALL THAT ARE TRUE.

a.) the magnetic forces are really only electrical forces seen in a moving frame of reference

b.) the energy and mass are equivalent measures of the same thing

c.) that we could travel to stars and it would only seem to take days, or less, but it would take speeds nearly equal to the speed of light.

d.) the gravity and electromagnetism are the same thing

Explanation / Answer

A

(a) True. The speed of light is the same seen by any observer anywhere in the universe is the absic postulate of theory of relativity.

(b)False. The speed of light is exactly 299,792,458 m/s .

(C )True.

(d)True.

speed of car= 100 km/h= 0.0277 km/s

so light from head light is moving with a velocity= 0.0277 + c

where c is the speed of light

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