An insulated piston–cylinder device contains 2.5 l of saturated liquid water at a constant pressure of 175 kpa. water is stirred by a paddle wheel while a current of 8 a flows for 45 min through a resistor placed in the water. one-half of the liquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to 400 kj, determine the voltage of the source. also, show the process on a p-v diagram with respect to saturation lines.

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.