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If a projectile is launched vertically from the earth with a speed equal to the escape speed, how high above the earth's surface is it when its speed is half the escape velocity
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A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.
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The energy equivalent of the rest mass of an electron is
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