A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest in the rocket,
A) the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
B) the light will reach the front of the rocket before it reaches the back of the rocket.
C) the light will reach the front of the rocket after it reaches the back of the rocket.
Answer: A
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The atmospheric pressure on Venus:
A) shows an extreme change with the seasons. B) is much lower than on Earth. C) is about the same as on Mercury. D) is much higher than on Earth. E) causes variations in surface temperature.
When 14C goes through radioactive decay, one of its neutrons splits into a proton and an electron. What does 14C become?
a. 13C6 b. 14N7 c. 13N7 d. 13B5 e. 15C6
If a piece of iron and a cup of water at the same temperature are heated so the internal energy of each doubles
A) the water will have the higher temperature. B) the iron will have the higher temperature. C) both will have the same temperature. D) need more information
The resistance of the heater is 10 ohms
Indicate whether the statement is true or false