Atorpedo shaped object 0.9m diameter is to move in air at 60m/s and the drag force is to be estimated from tests in water at half scale. determine the required model speed and the drag on the full scale if the model drag is found to be 1.14kn

1in2 processor chip can be modelled as an isothermal plane wall of silicon, isothermal on both sides. the power input to the bottom of the plane wall, or the processing power of the chip, often called the thermal design power (tdp), is 100w. assume the periphery is adiabatic. the silicon is 400 microns thick. the temperature at the junction, or in this case on the bottom of the isothermal plane wall, is 85°c. what is the top surface temperature, assuming that the only mode of heat transfer is conduction