The force required to drag several objects across a floor was measured. Calculate the µK for these objects.

Block Weight Friction µK

A 150 lb 30 lb

B 20.0 N 5.0 N

C 1,500 lb 60 lb

(NOTE: I don't want want you to just give me the answer, I want to know how to work it.)

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)