If a wheel of diameter of 68cm slows down uniformly from 8.40m/s to rest over a distance of 1- the total number of revolutions the wheel rotates in coming to rest is? 2- the angular acceleration is? 3- how long does it take for the wheel to come to the stop?

The least penetrating form of radiation is

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?