Apiston–cylinder assembly contains 0.7 lb of propane. the propane expands from an initial state where p1 = 60 lbf/in.2 and t1 = 30°f to a final state where p2 = 10 lbf/in.2 during the process, the pressure and specific volume are related by pv2 = constant. determine the energy transfer by work, in btu.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].