By driving a truck over a scale, it was determined that the loads on the front and rear axles are 18 kn and 12 kn, respectively, when the truck is empty. determine the weight and the location of the heaviest load that the truck can carry if the load on each axle is not to exceed 40 kn. three forces and a couple act on crank abc. determine the value of d so that the given system of forces is equivalent to zero at (a) point b, (b) point d.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.