5. An electron is separated from a proton by a distance of 1.00 10^-10 m. What is the magnitude of the electric force between them?​

2.304 * 10^-10N

Explanation:

The magnitude of the force is expressed as;

F = kq1q2/r²

k is the coulomb constant

q1 id the charge on the electron = -1.6*10^-19C

q2 is the charge on the proton = 1.6*10^-19C

k = 9*10^9

Substitute

F  = (9*10^9)*( -1.6*10^-19)( 1.6*10^-19)/(1.00 10^-10)^2

F = 9*10^9*-2.56*10^-38/1.00 10^-20

F = -23.04*10^-29/1.00 10^-20

F = -23.04 * 10^(-29+20)

F = -23.04 * 10 ^-9

F = -2.304 * 10 ^ -10N

Hence the magnitude of the electric force between them is

2.304 * 10^-10N

12000j is work done

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )