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Q. An 81 spacewalking astronaut pushes off a 660 satellite, exerting a 110 force for the 0.450 it takes him to straighten his arms. How far apart are the astronaut and the satellite after 1.40?

Q. At high noon, the Sun delivers 1.10-kW to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature?

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