Why is pancake syrup an example of a resistive force? Some forces are called contact forces because they require objects to touch. One is tension force, found in stretched wires. Another is the force ...

Gravity is the force of action between two objects. It’s called a natural force because it acts at a distance rather than needing to be in contact. Gravity is the force that holds us down on Earth and ...

The weak nuclear force doesn't play by the normal rules — and, in fact, it breaks one of the biggest rules of all. Back in the 1930s, physicists were doing experiments involving what they called "beta ...