An apple with a mass of 0.95 kilograms hangs from a tree branch 3.0 meters above the ground. If it falls to the ground, what is the kinetic energy of the apple just as it reaches the ground?

The velocity of a particle (m = 10 mg, q = - 4.0 μC) at t = 0 is 20 m/s in the positive x direction. If the particle moves in a uniform electric field of 20 N/C in the positive x direction, what is the particle's speed at t = 5.0 s?

A neutral atom may contain 8 protons

A car drives in a circle at a constant speed. Is the car accelerating? Why or why not?

Using the solar constant, estimate the rate at which the whole Earth receives energy from the Sun. (Hint: Think about the area of the Earth as seen from the Sun)

A flower pot is knocked off a window ledge from a height d = 19.6 m above the sidewalk. It falls toward an unsuspecting man of height h = 1.79 m who is standing below. Assume the man requires a time interval of Δt = 0.300 s to respond to the warning.

An input force of 50. newtons is applied through a distance of 10. meters to a machine with a mechanical advantage of 3.

Ask Your Teacher In a choir practice room, two parallel walls are 4.00 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.680 m away from it. To enable her to see the choir, a flat mirror 0.

What Could be the control in an experiment to measure the effects of gas additives on fuel

Two or more atoms can be held together through shared

What happens to wavelength as a wave leaves the air and enters the Perspex? a. It decreases c. It stays the same b. It increases d. It becomes irregular