The average height of an apple tree is 4.00 meters. how long would it take an apple falling from that height to reach the ground

A person is pushing a fully loaded 21.60 kg wheelbarrow at constant velocity along a plank that makes an angle?=20.0∘ with the horizontal. The load is distributed such that the center of mass of the wheelbarrow is exactly halfway along its length L.

In a longitudinal wave, particle displacement is perpendicular to the direction of wave motion parallel to the direction of wave motion opposite to the direction of wave motion above the direction of wave motion

Describe the concept of orbital motion as it relates to the earth., moon and sun

A motorist travels at 270 km in p hours at a certain average speed. an expression for the distance that this motorist travelled in x hours at the same average speed is what

Which best compares kinetic energy and temperature? A. Kinetic energy is energy of motion, while temperature is a measure of that energy in substances. B.

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.

In a recent hockey game, one player (m=100kg) was moving at a velocity of 8 m/s when he ran into another player (m=300kg) who was at rest (v=0m/s). After the collision, the two players were stuck together (moving with the same velocity).

In a laser, electrical energy is changed to light energy, and a small amount of the energy is wasted as heat. Describe the total amount of the heat in the system (using the conservation of energy).

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova