At what angle is the rope held

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Q. A portable CD player uses a current of 7.68 mA at a potential difference of 4.11 V. How much energy does the player use in 36.3 s?

Suppose the player has a mass of 0.658 kg. How long could the player operate on the energy required to lift it through a height of 1.17 m?

Q. An 845 N sled is pulled a distance of 170 m. The task requires 1.20 104 J of work and is done by pulling on a rope with a force of 125 N. At what angle is the rope held?

Reference no: EM1351726

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