A ball thrown vertically upward reaches a maximum height at 50m above the level of projection, calculate the time taken to reach the height, the speed of throw..

The mass of a muon is 207 times the electron mass; the average lifetime of muons at rest is 2.21 μs. in a certain experiment, muons moving through a laboratory are measured to have an average lifetime of 7.04 μs. for the moving muons, what are (a) β (b) k, and (c) p? the rest energy of the electron is 0.511 mev.

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Explain why electric current cannot exist if a current doesn't have a voltage source.