Acar weighing 3000 lb with radial tires is travelling at 50 mph. the road has no slope and the surface is smooth concrete. using the sae equation for the rolling resistance, find the road load and the road load horse power. use the following properties. drag coefficient, cd = 0.38; frontal area of the vehicle, a = 23 ft2; air density rho = 0.00236 lb-sec2/ft4.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t