Aship is sailing in dense fog and it could be close to dangerous cliffs. the captain switches on the fog horn. the horn sounds and the echo is heard 4 seconds later. the speed of sound in air is 340 m/s. calculate the distance between the ship and the cliff

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)