To calculate the force between two negative charges, we use the formula which is given by the Coulomb`s Law as
Here, and
are the charges on the pith balls, r is the separation between the charges and k is constant and its value is
.
Given and
.
Substituting these values in above formula we get,
Thus, the repulsive force between two pith balls is .
Answer:
Explanation:
let the ladder is of mass "m" and standing at an angle with the ground
So here by horizontal force balance we will have
by vertical force balance we have
now by torque balance about contact point on ground we will have
so we will have
now from first equation we have
Answer:
Explanation:
The Joule-Thomson coefficient is the ratio of the change of temperature to the change of pressure under isoenthalpic conditions:
Initial and final properties are:
. Superheated Vapor.
. Superheated Vapor.
The Joule-Thomson coefficient is approximately: