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A five pulley system with efficiency 80% is used to lift a 1000N load through a vertical height of 20m. then, calculate MA, effort, input work and output work
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Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this
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How do dying stars contribute to the formation of planets
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A five pulley system with efficiency 80% is used to lift a 1000N load through a vertical height of 2...
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