An unisulated piston-cylinder contains 1.53 kg of water initially at 200C and 400kPa. The water is now allowed to cool while a paddle wheel inputs work to stir the water and maintain a uniform temperature. The water ultimately becomes saturated vapor at 400kPa. The net energy transfer (kJ) to the water is:

increases it

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

answer and explanation;

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.