An apple fell 4 m from the top of the tree to the ground in 0.9 s. what was its average speed?

a. 3.6 m/s

b. 4.0 m/s

c. 4.4 m/s

d. 4.5 m/s down

You walked a dog 0.750 miles how many kilometers did you walk

The speed of sound in air is approximately 350 m/s. You are sitting in a canyon with cliffs 525 m from you. You clap your hands. How long a delay is it to hear an echo of the clap?

A very long, uniformly charged cylinder has radius R and linear charge density λ. Find the cylinder's electric field strength outside the cylinder, r≥R . Give your answer as a multiple of λ/ ε 0

A ball of mass 0.159 kg is dropped from rest from a height of 3.150 m. ( a. what is its momentum at the start and ( b. what is its momentum after falling 3.150 meters?

Top ice skaters skate on water. Do you agree? Explain.

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous

What's the transmission of heat requiring the movement of a liquid or a gas is?