Physics, 07.07.2019 04:30 brianna4357
5. a beach ball of mass 500grams falls from a height of 4m and hits the ground with a speed of 5m/sec. a). what is the work done on the ball by air resistance? b). what is the average force of the air resistance?
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Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 21:20
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 00:30
What is the relationship between globular clusters and the milky way?
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5. a beach ball of mass 500grams falls from a height of 4m and hits the ground with a speed of 5m/se...
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