One kg of steam in a piston/cylinder device undergoes the following changes of state. Calculate Q and W for each step. a. Initially at 350 kPa and 250°C, it is cooled at constant pressure to 150°C. b. Initially at 350 kPa and 250°C, it is cooled at constant volume to 150°C

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.