A system releases 481 kJ of heat while 390 kJ of work is done on the system. What is the change in internal energy?

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: