In any collision
A. total momentum is not conserved.
B. total kinetic energy is conserved.
C. total momentum is conserved.
D. total momentum is not conserved but total kinetic energy is conserved.
E. total momentum and total kinetic energy are conserved and the masses are equal.
C. total momentum is conserved.
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A stone is lifted and released so that it falls to the ground. According to Galileo, it fell because
A) of its inertia. B) of electrical attraction. C) its natural motion is to fall. D) of friction. E) of gravity.
A hunter on level ground fires a bullet at an angle of 10 degrees below the horizontal while simultaneously dropping another bullet from the level of the rifle. Which bullet will hit the ground first?
A) the one dropped B) the one fired C) both hit at the same time.
A beam of white light of a certain frequency is incident on a metal surface. If the work function of this surface is 2.20 eV, what frequency of light would give a maximum kinetic energy of 0.25 eV to the photoelectrons ejected from this surface?
A) 2.05 × 1014 Hz B) 1.02 × 1014 Hz C) 2.50 × 1014 Hz D) 3.53 × 1014 Hz E) 5.92 × 1014 Hz