Which of the following is not considered to be a rock

A (coal) B (sandstone) C (pumice) D (lava)

12. One object has half the mass of another object. The first object also has half the - --. a. inertia b. velocity c. gravitational acceleration d. all of these

A lever with an input arm of 2 meters high has a mechanical advantage of 4 what is the output arm's length

Carol and Dan run a 50 meter race along a straight horizontal track. They start at the same position at the same time. Carol runs with constant speed. During the race, Dan stops for a few seconds to tie his shoe.

Explain what an increase in wavelength will do to the frequency of a wave

A stationary neutron star is also called a pulsar? True False

What is s the best description of the constructive interference of light? A. two waves have the same direction of displacement. B. two waves have displacement in opposite directions. C. a longitudinal wave meets a transverse light wave D.

1875 kg car is traveling at 22 m/s. It's momentum is?

Hot air balloon rises because a) molecules become lighter when heated b) molecules move faster and farther apart when heated c) molecules are less attracted by gravity when heated d) molecules become charged and repel each other when heated

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?

A person who has dissociative identity disorder: O A. cannot remember who he or she is. O B. has panic attacks when confronted. C. has two or more distinct personalities OD hears voices