A car moves in a straight line such that for a short time its velocity is defined by v= (3t^2 + 2t) bels, where t is in seconds. Determine its position and
acceleration when t = 3 s. When t=0;S=0.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency

What is a monomer? how do they form a ploymer from the view point of chemical bonding?