Physics, 11.05.2021 17:00 linreaburg
A ski area rope-tow pulls a 72.0-kilogram skier from the bottom to the top of a 40.0-meter-high hill.
The rope-tow exerts a force of magnitude 158 newtons to move the skier a total distance of 230.
meters up the side of the hill at constant speed. Calculate the total amount of gravitational potential
energy gained by the skier while moving up the hill.
Answers: 3
Physics, 21.06.2019 20:30
Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?
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Physics, 21.06.2019 23:20
Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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Physics, 22.06.2019 19:50
Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ฮต0 = 8.85 ร 10-12 c2/n ยท m2)
Answers: 1
A ski area rope-tow pulls a 72.0-kilogram skier from the bottom to the top of a 40.0-meter-high hill...
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