10/16/20

Physics problem

The electric company uses a unit we will learn about later in this course, the kilowatt-hour (KWHR), to measure your electrical usage.  An average home in the US uses about 10,900 KWHR of... more
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10/06/20

An object is fired straight up with an initial velocity of 35.5 m/s. How long before the object hits the ground?
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10/06/20

Physics Question with Friction and Newtons' Laws
A child sits on a freshly oiled, straight stair rail that is effectively frictionless and slides down it. She has a mass of 25 kg, and the rail makes an angle of 40° above the ground. If she slides... more
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04/21/20

Physics G7th GRade Speed and Time
Walking at the rate of 4 km/h a man cover certain distance in 2 hr 45 min. In howmuch time the man will cover the same distance while running at a speed of 16.5km/h?I have asked this question many... more
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11/14/18

Two hikers are 11 miles apart and walking toward each other. They meet in 2 hours. Find the rate of each hiker if one hiker walks 0.7 mph faster than the other.
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