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You are in the lab with a 10 V battery. You have a 10 W light bulb and you want to put 0.75 A of current through the light bulb and 7.5 V across the light bulb. This will allow the light bulb to have a brightness proportional to 5.625 W. Assuming any resistors that you need, design and build a circuit that delivers the required current and voltage to the bulb

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    how high will 2.10-kg rock go if thrown straight up by someone who does 70.0J of work on it? neglect air resistance

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