In a hydrogen atom, the electron in orbit around the proton feels an attractive force of about 7.45 × 10−8 n. if the radius of the orbit is 5.89 × 10−11 m, what is the frequency? answer in units of rev/s

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Which of the following are appropriate acceleration units?