Physics, 25.03.2021 01:00 NotYourStudent
1. What is the potential energy of a stone with a mass of 2.3 kg dropped from a building that is 197 m tall? 2. A ball is rolled down a hill and at the bottom it has a velocity of 9.2 m/s. What is the height of the hill?
Answers: 1
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Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s
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Physics, 23.06.2019 01:00
The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?
Answers: 3
1. What is the potential energy of a stone with a mass of 2.3 kg dropped from a building that is 197...
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