A body of mass 15 kg moving with velocity of 2 m/s is acted upon by a force of 75 N for two seconds. The final velocity will be (A) 10 m/s (B) (C) 12 m/s 11 m/s 15 m/s (D)

There is a piston-cylinder system that undergoes a process. The total work done by the system, W, is 50 kJ, and thechange in the specific internal energy of the system, Δu, is −7 kJ/kg. We also know the total mass of the system, m, is 10kg. During the process, both the change of kinetic energy and the change of potential energy are negligible. Pleasedetermine 1) the total energy change, ΔE, in kJ; 2) the total heat transfer, Q, in kJ; and 3) judge the direction of energyflow for the heat transfer: into the system or out of the system.

A canister of sevoflurane, an inhaled anesthetic, is warmed to room temperature over the course of 30 minutes. As the gas warms, it pushes on a movable piston with a force of 623 mN, increasing the volume of the gas by 16 cm^3. How much work was done by the gas? A. 0.03 CJ B. 0.27 CJ C. 2.7 CJ D. 270 CJ

A velocity of 25 km/hkm/h is equivalent to:   6.94 m/sm/s 90.0 m/sm/s 90. m/sm/s 6.9 m/sm/s