A helical compression spring is wound from 3.5 mm dia. A228 music wire (set removed) and has an OD of 22 mm. The spring has plain-ground ends. a) In order to achieve a spring rate of 25 N/mm, specify the total number of coils in the springb) Round to the nearest 1/4 turn and specify Nt

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

Air is flows through an adiabatic nozzle with an inlet pressure of 400 psia at a temperature of 300°f and a velocity of 20 ft/s. the outlet pressure is 40 psia and the velocity is 800 ftl/s. determine the outlet temperature of the air using: a) property tables b) specific heat (using the specific heat value for air at 300°f)

The 10lb block has an initial velocity of 10 ft/s on the smooth plane. if a force f (2.5 t) lb, where t is in seconds, acts on the block for 3 s, determine the final velocity of the block and the distance the block travels during this time.