Streaks of light made when small debris hits our atmosphere are called
A) meteorites. B) meteors. C) asteroids. D) meteoroids. E) comets.
B
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Two beams of particles can be made to collide head-on at the point where the reactions are studied, providing a larger collision energy than from collisions with a stationary target. This must be true because to calculate available energy
A. actual velocities are more important than relative velocities. B. what counts is the velocity of the particles relative to the distant stars. C. what counts is the velocity of the particles relative to the Earth's rotation. D. actual velocities are less important than relative velocities.
Write the equation of a wave, traveling along the +x axis with an amplitude of 0.02 m, a frequency of 440 Hz, and a speed of 330 m/sec
a. y = 0.02 sin [880?(x/330 ? t)] b. y = 0.02 cos [880? x/330 ? 440t] c. y = 0.02 sin [880?(x/330 + t)] d. y = 0.02 sin [2?(x/330 + 440t)] e. y = 0.02 cos [2?(x/330 + 440t)]
Gaps in the asteroid belt (often called Kirkwood gaps) are caused by
A) orbital resonances with Jupiter. B) tidal forces from the Sun. C) tidal forces from Jupiter. D) the competing gravitational tugs of Mars and Jupiter.
What support for the solar nebula theory has come from observations of nearby young stars?
What will be an ideal response?