Is the answer d? a skydiver is accelerating downwards as he falls. earth is pulling him down with a gravitational force of 600 n downward, while he pulls the earth upward with a force of 600 n. he also experiences an upward drag force of 100n what is the net force on the skydiver? 100 n, upward 500 n, upward 500 n downward 100 n, downward

Asquare isothermal chip is of width w=5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at tinf=15 °c. from reliability considerations, the chip temperature must not exceed t=85 °c. if the coolant is air and the corresponding convection coefficient is h=200 w/m2 x k, what is the maximum allowable "power" of the chip? if the coolant is a liquid for which h=3000 w/m2 x k, what is the maximum allowable power of the chip?