Suppose an electron orbits a stationary proton at'a radius of 5.3 X 10" m. What speed must the electron
have if its mass times its centripetal acceleration is to be
equal to the electrostatic force of attraction between the
electron and the proton?

Need in all of themmm only answer if you know pls

Astate of matter all that has define volume and can flow is a(n)

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above