Relativity

# Fundamentals of Physics Study Set 2

Physics & Astronomy

## Quiz 37 :Relativity

Showing 1 - 20 of 68
Two events occur simultaneously at separated points on the y axis of reference frame S.According to an observer moving in the positive x direction:
Free
Multiple Choice

D

A train traveling very fast (v = 0.6c)has an engineer (E)at the front, a guard (G)at the rear and an observer (S')exactly half way between them.Both E and G are equipped with yellow signaling lamps.The train passes a station, closely observed by the station master (S).Both E and G use their lamps to send signals.According to both S and S' these signals arrive simultaneously at the instant S' is passing S.According to S':
Free
Multiple Choice

E

A basic postulate of Einstein's theory of relativity is:
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Multiple Choice

D

The speed of light in vacuum is approximately
Multiple Choice
Two events occur simultaneously on the x axis of reference frame S, one at x = a and the other at x = +a.According to an observer moving in the positive x direction:
Multiple Choice
The proper time between two events is measured by clocks at rest in a reference frame in which the two events:
Multiple Choice
The spaceship U.S.S.Enterprise, traveling through the galaxy, sends out a smaller explorer craft that travels to a nearby planet and signals its findings back.The proper time for the trip to the planet is measured by clocks:
Multiple Choice
As we watch, a spaceship passes us in time t.The crew of the spaceship measures the passage time and finds it to be t'.Which of the following statements is true?
Multiple Choice
A millionairess was told in 1992 that she had exactly 15 years to live.However, if she immediately takes off, travels away from the Earth at 0.8 c and then returns at the same speed, the last New Year's Day the doctors expect her to celebrate is:
Multiple Choice
An observer notices that a moving clock runs slow by a factor of exactly 10.The speed of the clock is:
Multiple Choice
A meson when at rest decays 2 s after it is created.If moving in the laboratory at 0.99c, its lifetime according to laboratory clocks would be:
Multiple Choice
Pi mesons at rest have a half-life of T.If a beam of pi mesons is traveling at a speed of v = c, the distance in which the intensity of the beam is halved is:
Multiple Choice
A meson moving through a laboratory of length x at a speed v decays after a lifetime T as measured by an observer at rest in the laboratory.If the meson were at rest in the laboratory its lifetime would be:
Multiple Choice
A meter stick moves sideways (that is, in a direction perpendicular to its length)at 0.95c.According to measurements taken in the laboratory, its length is:
Multiple Choice
A consequence of Einstein's theory of relativity is:
Multiple Choice
According to the theory of relativity:
Multiple Choice