Physics, 02.09.2021 22:30 werewolf4751
1. A rock is kicked off the edge of a cliff that is 127 m high. If its initial
velocity is 4.2 m/s in the horizontal direction, how far from the base
of the cliff will the rock land?
Answers: 1
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What is the scientific definition of energy that relates to work
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Physics, 22.06.2019 10:50
If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.
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Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
Physics, 22.06.2019 19:00
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
1. A rock is kicked off the edge of a cliff that is 127 m high. If its initial
velocity is 4.2 m/s...
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