What work should the net external force do
A 6500-kg satellite is in a circular earth orbit that has a radius of 3.4 x 107 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.3 x 106 m. What work must the net external force do?
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In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 3.80 107 J at lift-off. What is the work done on the jet by the catapult?
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There is 10g/L of carboxylic acid in boiling water. What is the minimum amount of boiling water needed to dissolve a 3.325 g sample?
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