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A year 11 pupil with a mass of 55kg swinging back on their chair and falling off it at a speed of 0.6m/s. What is his kinetic energy?
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Acar jack with a mechanical advantage of 6 needs to produce an output force of 600 n to raise a car. what input force is required? 6 n 100 n 600 n 3,600 n
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What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%
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Physics, 23.06.2019 00:30, oldless504
What practical value did astronomy offer to ancient civilizations?
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A year 11 pupil with a mass of 55kg swinging back on their chair and falling off it at a speed of 0....
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