A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?
It is double the original.
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Suppose the Galilean transformation equations are true and your spaceship is moving at twice the speed of light relative to the ether. What odd things will you observe in your spaceship? Select all that apply. (If you are using the back of the book to communicate your answers, you can point to multiple letters with several fingers.)
A. You won’t be able to see anything behind you. B. You won’t be able to see anything in front of you. C. The beam from a laser pointer facing forward and a bit to your right will get curved toward the ship’s stern. D. Light from stars in front of you will become infinitely blue-shifted. E. Stars a bit to the right or left of the forward direction will have their apparent positions shifted dramatically toward the ship’s stern. F. You will see none of these effects. T. You will see all of these effects.
Five objects of mass m move at velocity 
at a distance r from an axis of rotation perpendicular to the page through point A, as shown below. The one that has zero angular momentum about that axis is
A.
B.
C.
D.
E.
The experiment that dispelled the idea that light travels in the ether is called the
a. Michelson-Morley experiment. b. Hafele and Keating experiment. c. Fitzgerald-Kennedy experiment. d. twin paradox.
A 6.0-mF capacitor is attached to a 20-V power supply. How much energy is stored in the capacitor?
a. 2.0 × 10^-3 J c. 2.0 × 10^-4 J b. 5.2 × 10^-4 J d. 1.2 × 10^-3 J