A system uses 49 J of energy to do work, and the change in internal energy is 58 J. How much heat was added to the
system?
93 j
0973 j
107 j
1170 j

How do the kidneys affect homeostasis

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.