Consider the following physics problem. An object with a mass of 1 kg and a velocity of 1 m/s in the x-direction has a net force of 1 Newton pushing on it (also in the x-direction). What will the ...

Why does light carry energy even though it has no mass? This video explains the real physics behind photons, energy–momentum ...

When a magnetic material is bombarded with short pulses of laser light, it loses its magnetism within femtoseconds (10 –15 seconds). The spin, or angular momentum, of the electrons in the material ...

Gravity causes matter to clump together, forming everything from stars to planets. Accretion disks form when material swirls around a central object due to conserved angular momentum. Magnetic fields ...