A rocket speeding by the Earth is known, when at rest, to be roughly cylindrical with a radius of 15 m and a length of 150 m. When speeding by, its volume is measured to be 
What is its speed?
A. 0.917c
B. 0.774c
C. 0.678c
D. Insufficient information is given.
A. 0.917c
You might also like to view...
Intensity of Sound: By how many decibels does the intensity level of a sound decrease when you triple your distance from a source of sound?
A. 9.5 dB B. 4.8 dB C. 6.0 dB D. 12 dB E. 3.0 dB
Exclusion Principle: How many 2d electron states can an atom have?
A. 0 B. 4 C. 6 D. 8 E. 10
Star A and star B both have an apparent magnitude of 7.0, but star A is at a distance of 15 pc and star B is at a distance of 30 pc. Which statement below is correct?
A) Star A appears brighter than star B, but star B and star A have the same intrinsic brightness. B) Star B appears brighter than star A, but star B and star A have the same intrinsic brightness. C) Star A and star B appear to have the same brightness, but star B is intrinsically brighter than star A. D) Star A and star B appear to have the same brightness, but star A is intrinsically brighter than star B. E) It is impossible to determine how bright these stars are or appear to be relative to one another, given the information above.
Increasing the amplitude of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no other changes in the system.)
A) The frequency increases. B) The frequency decreases. C) There is no change in the frequency. D) The frequency depends on the displacement, not the amplitude.