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A man uses 1930J of energy while lifting a 20K mass up 7.5 meters. What is the percent of efficiency?
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A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?
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A man uses 1930J of energy while lifting a 20K mass up 7.5 meters. What is the percent of efficiency...
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