What is the ablity to do work defined as?

Explain how a metal can become a temporary magnet? How it is heat generated? What aspect of sound needs to be altered to remedy the situation if you are seated in the back of a large auditorium and you cannot hear the speaker in the front? Can eventually counteract the acceleration from? Does a physical property give off heat? How do you predict the distance a projectile will travel? What is it about us that we breath in oxygen which has 16 protons and produce carbon dioxide which has 22 protons and vice versa with plants? How does analog clock work? 4x3x13 pump what does it mean? What is a good heat insulator? Which data is recorded in an experiment? What are two ways that humans can make plasma? Why is it good to confirm the information independently when buying a light bulb? Do sound waves undergo reflection rarefaction and polarization phenomena? What is to move in a backward motion or direction? What radiation does sun emit? How much power is in a sneeze? What is Friction Force? What is amplitude and how does it affect volume? What is the amplitude of a vibration?

What is the ablity to do work defined as?