Charge +e is placed at P, what is the potential energy of the system, in terms of k, e, d, and numerical constants, as needed?

P.E = ke/d

Explanation:

Consider, a charge "e" placed at a point P and a test charge "q" is moved towards it at a distance "d". Now, the work done in movement of this charge will be:

Work = (Force)(Displacement)

Here,

E = F/q   =>   F = Eq

Displacement = d

Therefore,

Work = E q d

Since, this work is done due to change in potential. Therefore, this work done can be said as equal to potential energy.

P.E = E q d

but,

Electric Field = E = Ke/d²

P.E = (ke/d²)(qd)

P.E = keq/d

here,

we consider the test charge to be unit positive charge (q = 1 C)

Therefore, the potential energy of the system becomes:

P.E = ke/d

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

answer: decibel

explanation: