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

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 ...

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 ...