W you throw a ball up into the air with an initial vertical velocity of 50 m/s, how long will the ball be in the air before it comes all the way back down to your hand?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

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)