Aboulder that is resting on the top of a cliff slips over the edge and accelerates towards the ground. as the rock falls, the amount of kinetic energy
a) increases.
b) decreases.
c) stays the same.
d) increases then decreases.

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

Ice at 0.0∘c has a density of 917 kg/m3. a 3.00 cm3 ice cube is gently released inside a small container filled with oil and is observed to be neutrally buoyant. what is the density of the oil?

Explain how a step-down transformer makes electricity safe for use in homes