Figure R5.10 shows a two-observer space time diagram for an Other Frame that moves at a speed of 0.5 relative to the Home Frame. What are the coordinates of event P in the Other Frame?
A. t ? = 3.4 s, x ? = 2.6 s
B. t ? = 5.2 s, x ? = 2.6 s
C. t ? = 2.9 s, x ? = 1.2 s
D. t ? = 3.7 s, x ? = 3.4 s
E. Other (specify)
C. t ? = 2.9 s, x ? = 1.2 s
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A chamber that can be filled with different gases has placed in it a source of sound that in air produces a frequency of 200 Hz and a microphone to pick up the sound for frequency analysis. First the chamber is filled with helium (speed of sound 1 000 m/s at room conditions), then the helium is replaced with oxygen (speed of sound 330 m/s at room conditions), and then finally the helium is
replaced with carbon dioxide (speed of sound 269 m/s at room conditions). In which gas is the highest frequency of sound found by the microphone during this experiment? a. helium b. oxygen c. carbon dioxide d. They all have the same frequency of sound.
As ice floats in water, about 10% of the ice floats above the surface of the water. If we float some ice in a glass of water, what will happen to the water level as the ice melts?
a. The water level will rise 10% of the volume of the ice that melts. b. The water level will rise, but not as much as the 10% indicated in answer A. c. The water level will remain unchanged. d. The water level will become lower.
A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 7.00-s interval at a rate of 0.0500 rad/s2 . What angular displacement does the Ferris wheel undergo in this 7.00-s interval?
a. 4.48 rad c. 4.73 rad b. 2.50 rad d. 0.500 rad
Particle 1 with charge q1, and particle 2, with a charge q2, are on the x axis, with particle 1 at x = a with and particle 2 at x = -2a. For the net force on a third charged particle, at the origin to be zero q1 and q2 must be related by q2=:
A) 2q1 B) 4q1 C) -2q1 D) -4q1 E) -q1/4