What eventually happens to a comet when its orbit brings it into the inner Solar System?
a. It builds up speed and increases its orbital period
b. It is vaporized by the Sun, becoming inactive rock and dust.
c. It is pulled in by the gravitation forces of a Terrestrial planet.
d. It is blasted apart by asteroids within the asteroid belt.
e. It absorbs more ice and rock from asteroids within the asteroid belt.
b
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The capture of too few solar neutrinos by Davis in the solar neutrino experiment
a. has been disproved by the results of later experiments. b. can be explained if the sun is not undergoing thermonuclear fusion of hydrogen in its core. c. indicates that the sun's core is much hotter than expected. d. indicates that the sun's core is convective. e. none of the above
A very light ping-pong ball moving east at a speed of 4 m/s collides with a very heavy stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east
Which object experiences the greater magnitude impulse during the collision? A) the Ping-Pong ball B) Neither; both experienced the same magnitude impulse. C) the bowling ball D) It is impossible to tell since the actual mass values are not given. E) It is impossible to tell since the velocities after the collision are unknown.
Some of the gaps in Saturn's rings, such as the Cassini Division, are caused by ____ with moons
a. tides b. ripples c. rotations d. resonances e. forward scattering
A 1200 kg car is moving at 5.0 m/s EAST. It strikes an 1800 kg car at rest. The cars have an elastic collision and move in the EAST or WEST direction. The relative velocity between the cars after the collision is
A. 3.0 m/s WEST. B. 1.0 m/s EAST. C. 4.0 m/s EAST. D. 5.0 m/s EAST. E. 1.0 m/s WEST.