Work is done when a force acts on a moving body ... Work done has the same units as energy - joules. This is because energy is the ability to do work. You must have energy to do work.

An elastic object, such as a spring, stores elastic potential energy when stretched or squashed. The extension of an elastic object is directly proportional to the force applied. This equation ...

Three-nucleon force affects nuclear stability, impacting element formation and stellar evolution. The force increases energy ...

The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70 percent). Scientists have ...

Understanding how these nucleons interact to keep the nucleus stable and in a low energy state has been a central question in nuclear physics for over a century. The most powerful nuclear force is ...