Physics Answers

A proton traveling at 107m/s Collides with a stationary particle and bounces back add 2×2 is collides with a stationary particle and bounces back at 2*10^6m/s. If the Particles moves forward at 3*10^6. Find the mass of the station iPad scree find the mass of the stationary Particle

A body of mass 4kg moving with a velocity of 7m/s is acted upon by a force of 20N for 0.1s. Determine the final velocity of the body

If and object of 80kg falls from a height of 90m what is the velocity the object will fall with?

If an object of 80kg falls from a height of 90m what is the KE

if an object of 80kg falls from a height of 90m what is the potential energy?

Find the radius and speed of an electron in the ground state of doubly ionized lithium and compare them with the radius and speed of the electron in the ground state of the hydrogen atom.

(Li++ has a nuclear charge of 3e.)

An antiproton has the mass of a proton but a charge of -e. If a proton and an antiproton orbited each other, how far apart would they be in the ground state of such a system? Why might you think such a system could not occur?

The longest wavelength in the Lyman series is 121.5 nm. Use this wavelength together with the values of c and h to find the ionization energy of hydrogen.

How much energy is required to remove an electron in the n=2 state from a hydrogen atom?

Find the wavelength of the spectral line that corresponds to a transition in hydrogen from the n = 6 state to the n = 3 state. In what part of the spectrum is this?