High-power lasers are used to compress a plasma (a gas of charged particles) by radiation pressure. a laser generating radiation pulses with peak power 2.5 ✕ 103 mw is focused onto 1.0 mm2 of high-electron-density plasma. find the pressure exerted on the plasma if the plasma reflects all the light beams directly back along their paths.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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the answer should be in the picture.