Aball is projected upward at time t = 0.0 s from a point on a roof 90 m above the ground. the ball rises, then falls and strikes the ground. the initial velocity of the ball is the velocity of the ball when it is above the ground is about

The necleus of an atom is made up of what subatomic particles?

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?