Arigid tank of volume 2 m3 contains air at 0.21 bar, 290 k. a leak develops and air flows in slowly from the surroundings, which are at 1.1 bar, 312 k. after a while, the tank and its surroundings come to equilibrium. what is the final temperature in the tank, in °c, and how much mass has entered the tank, in kg? neglect kinetic and potential energy effects and assume the air is an ideal gas with constant specific heats evaluated at 300 k.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise