Apply Which has more gravitational potential energy: a bird on the ground or the same bird in a tree? Why?

A batter swings and hits a pitched baseball far over the left field wall. at the moment the baseball contacts the bat, which object exerts a larger force

An astronaut drops a feather from 1.2m above the surface of the moon. If the acceleration of gravity on the moon is 1.6 m/s, how long does it take the feather to hit the moon's surface

Give the reason why all atoms have total charge of zero

Neglecting air resistance, which of the following statements describes the change in energy of a diver who falls downward toward a swimming pool? A. Potential energy increases, kinetic energy increases, and total energy increases. B.

3. What statement best describes an independent variable? A. The factor that does not change, but impacts the constant in an experiment B. The factor that's changed by the experimenter and impacts the constant in an experiment C.

A skier speeds down a smooth ski slope which is at an angle of θ = 23° with the horizontal. The mass of the skier is 71 kg. Take the downhill direction to be positive and uphill to be negative.

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.0 m/s in 3.30 s.

Why do skiers often wear sunglasses while they are skiing

The amount of gravitational force exerted on each other between two objects depends on their A) mass and distance. B) mass and diameter. C) distance and volume. D) distance and location. Eliminate

Why is plasma called the "fourth state of matter"? I've recently heard that plasma is sometimes referred to as the "fourth state of matter". Why is this? Why is it not the first, second or third?