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A rocket engine applies a thrust for e fo 450N for 15s. The 2800Kg rocket is travelling 690 m/s before the engine thrust. What is the final velocity of the rocket?
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Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?
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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)
Answers: 1
A rocket engine applies a thrust for e fo 450N for 15s. The 2800Kg rocket is travelling 690 m/s befo...
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