A solid steel column is 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 2.0 × 1011 N/m2. By what distance does the column shrink when a 5000-kg truck is supported by it?
A) 3.2 × 10-6 m B) 8.0 × 10-7 m C) 3.1 × 10-5 m D) 7.8 × 10-6 m
C
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Observer A sees a pendulum oscillating back and forth in a relativistic rocket and measures its period to be TA. Observer B moves along with the rocket and measures the period of the pendulum to be TB
What is true about these two time measurements? A) TA > TB B) TA = TB C) TA < TB D) TA could be greater or smaller than TB depending on the direction of the motion.
Given the differences in size and composition of the jovian planets in our solar system, how many groups is it appropriate to sort them into?
A) one B) two C) three D) four
When a fixed amount of ideal gas goes through an adiabatic expansion
A) its internal (thermal) energy does not change. B) the gas does no work. C) no heat enters or leaves the gas. D) its temperature cannot change. E) its pressure must increase.
A moving van with a stone lightly glued to the midpoint of its ceiling smoothly moves at constant velocity. When the glue gives way, the stone falls and hits the floor
A) ahead of the midpoint of the ceiling. B) exactly below the midpoint of the ceiling. C) behind the midpoint of the ceiling. D) none of the above