)a vertical piston/cylinder device contains 0.01 lbm of gas. the gas has an initial volume of 0.18 ft3 and initial specific internal energy of 282 btu/lbm. the piston, with a mass of 110 lbm and cross-sectional area of 0.11 ft2 , is in equillibrium with the gas. the outside ambient pressure is 14.7 psia. the gas now undergoes a process in which the volume increases to 0.4 ft3 . the final specific internal energy is 316 btu/lbm. assume a quasiequillibrium process in which piston movement is slow with no acceleration. friction between the piston and cylinder is negligible.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

It may possibly be c i think |-/

Go to the bathroom and vape