The "size" of the atom in rutherford's model is about 1.0 x 10^−10 m. (a) determine the attractive electrostatic force between an electron and a proton separated by this distance.
(b) determine (in ev) the electrostatic potential energy of the atom. (assume the electron and proton are again separated by the distance stated above.)

(a)

(b)

Explanation:

Given:

*p = charge on proton =

*e = magnitude of charge on an electron =

*r = distance between the proton and the electron in the Rutherford's atom =

Part (a):

Since two unlike charges attract each other.

According to Coulomb's law:

Hence, the attractive electrostatic force of attraction acting between an electron and a proton of Rutherford's atom is  .

Part (b):

Potential energy between two charges separated by a distance r is given by:

So, the potential energy between the electron and the proton of the Rutherford's atom is given by:

Hence, the electrostatic potential energy of the atom is  .

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

if you answer my question i will answer yours