a machine is used to lift crates of oranges has an efficiency of 65%. if the machine provides 1300 newtons through a distance of 50 meters, what is the work output?

The radius r of a sphere is increasing at a rate of 8 inches per minute. (a) Find the rate of change of the volume when r = 8 inches. in. 3/min (b) Find the rate of change of the volume when r = 38 inches. in. 3/min

What is Kinetic Molecular Theory? Explain.

A circular radar antenna on a Coast Guard ship has a diameter of 2.10 m and radiates at a frequency of 11.0 GHz. Two small boats are located 8.00 km away from the ship. How close together could the boats be and still be detected as two objects

Which of the following is true about short circuits? A. Occurs when a very low resistance circuit is formed B. Occurs when a very high resistance circuit is formed C. Causes a very small current to form D. Cannot cause a fire

The pressure is measured at the bottom of a cylindrical container with cross-sectional area A that is filled to a height H by a liquid with density pL.

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. It is initially at position xi=3.37 mxi=3.37 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx=-6.

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. calculate the kinetic energy of this block

Which do you think is the bigger problem among college students-the continued abuse of illegal drugs or the rising abuse of prescription and over-the-counter medications?

A man stands still on a moving walkway that is going at a speed of 0.4 m/s to the east. What is the velocity of the man according to a stationary observer?

Which, if any, of the heat engines violate (s) the second law of thermodynamics?