The frequencies needed to reproduce high-quality sounds are
A) within the range of hearing.
B) beyond the range of hearing.
C) centered about 2000 hertz.
D) none of the above
Answer: B
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In size, from largest to smallest, the correct order for the Galilean moons is:
A) Callisto, Ganymede, Europa, Io. B) Ganymede, Callisto, Io, Europa. C) Io, Europa, Callisto, Ganymede. D) Europa, Ganymede, Io, Callisto. E) Ganymede, Callisto, Europa, Io.
A spacecraft (mass = m1) orbits a planet (mass = m2) in a circular orbit (radius = r). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
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A pressure of 1012 mb is indicated on a weather map. Is this pressure high or low? Explain