An object of mass m suspended by a spring vibrates with a period t. part a if this object is replaced by one of mass 4 m, the new object vibrates with a period: a. t. b. 2 t. c. 4 t. d. 8 t.

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)