A particle in a 453 m-long linear particle accelerator is moving at 0.875c. How long does the particle accelerator appear to the particle?
A) 219 m
B) 589 m
C) 104 m
D) 936 m
A
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What is the primary reason why scientists accept the idea that the speed of light is the same for everyone?
A) because it has been verified by many observations and experiments B) because it makes sense when you think about it as Einstein did C) because no one has come up with a better idea about the speed of light D) because the theory is just so darn cool, it can't be wrong
Two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator whose frequency range is to A point P is located from one loudspeaker and 3.6 m from the other
The speed of sound is 344 m/s. The frequency produced by the oscillator, for which constructive interference of sound occurs at point P, is closest to A) 2580 Hz. B) 2903 Hz. C) 2473 Hz. D) 2795 Hz. E) 2688 Hz.
What would Jupiter have needed to have become a star?
A) more moons B) more mass C) a slower rotation, like the Sun D) a different chemical composition E) a higher density
Water flows over a waterfall that is 20 m high at the rate of 4.0 × 104 kg/s. If this water powers an electric generator with a 40% efficiency, how many watts of electric power can be supplied?
What will be an ideal response?