To form a hydrogen atom, a proton is fixed at a point and an electron is brought from far away to a distance of 0.529×10-10m, the average distance between proton and electron in a hydrogen atom. How much work is done?

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2