Exercises 1 What is the energy associated with the fifth orbit? b. Calculate the radius of Bohr's fifth orbit for a hydrogen atom.
2 A hydrogen atom makes a transition from the n = 3 level to the n = 2 level. What is the change in energy?
3 An electron is in the second excited orbit of hydrogen, corresponding to n = 3.
Find (a) the radius of the orbit and (b) the wavelength of the electron in this orbit.​

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?

Which planets are visible without a telescope