A spaceship carrying a light clock moves at a speed of 0.960c relative to an observer on Earth
If the clock on the ship advances by 1.00 s as measured by the space travelers aboard the ship, how long did that advance take as measured by the observer on Earth?
A) 0.96 s
B) 1.2 s
C) 2.6 s
D) 3.6 s
E) 5.8 s
D
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a. filters b. lasers c. coolant d. oxygen e. tertiary mirrors
Like other solid bodies in the solar system, Earth's surface was kept molten by:
A) radioactivity. B) differentiation. C) convection. D) bombardment by small bodies. E) the solar nebula.
Neutron stars and black holes are formed by
A) the star formation process. B) mass transfer in binary star systems. C) novae. D) type I supernovae. E) type II supernovae.
The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is
a. 0 d. 5 m/s2 b. 2 m/s2 e. 7.5 m/s2 c. 4 m/s2