What is the rest energy of a proton? 
A. 
B. 
C. 
D. 
E. 0.0
A.
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Potential Energy: Two protons are released from rest, with only the electrostatic force acting. Which of the following statements must be true about them as they move apart? (There could be more than one correct choice.)
A. Their electric potential energy keeps increasing. B. Their kinetic energy keeps increasing. C. Their electric potential energy keeps decreasing. D. Their kinetic energy keeps decreasing. E. Their acceleration keeps decreasing.
Which unit represents the most energy?
A) calorie B) Calorie C) joule D) all the same
Bob is in a spaceship going by you at 90% of the speed of light, but in an upright standing position. Bob measures his mass to be 50 kg, his height to be 2.0 meters, and his waist size to be 80 cm. What would you say about his measurements?
A) His mass is more than 50 kg, his height is still 2.0 meters, and his waist size is less than 80 cm. B) His mass is more than 50 kg, his height is less than 2.0 meters, and his waist size is less than 80 cm. C) His mass is less than 50 kg, his height is more 2.0 meters, and his waist size is less than 80 cm. D) You would measure the same mass and size as he does.
During which type of process applied to an ideal gas is there no work done by the gas?
A) adiabatic B) isothermal C) isochoric D) isobaric E) Work is done by the gas during any change to the gas.