For an object at rest, the normal force equals the gravitational force. What is the sum of these forces called? Net force Unbalanced force Inertia Potential force

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.