Two equal but opposite charges are separated by a distance d.Determine a formula for VBA=VB−VA for points B and A on the line between the charges.Express your answer in terms of the variables q, b, d, and appropriate constants.

Q: A plane traveling north at 200 km/h turns and then travels south at 200 km/h. The change in its velo...

A: Consider the initial velocity of plane be vi, and its final velocity be vf. Initially, the plane tra...

Q: Two mercury drops, each of radius r, merge to form a bigger drop. Calculate the surface energy relea...

A: Consider that R is the radius of the bigger drop and T is the surface tension of the bigger drop.

Q: A cylinder containing water upto 25cm height has a hole of cross-section 0.25cm2 at its bottom. It i...

A: Volume rate flow through the bottom of the cylinder is:

Q: When air is pumped into a cycle tyre the volume and pressure of air in the tyre , bothy are increase...

A: When air pumped in the cycle tyre, the number of molecules in the tyre increases. As we know that Bo...

Q: Explain Graham's law on the basis of kinetic theory of gases.

A: Graham’s law of diffusion:According to this law, the rate of diffusion of gas is inversely proportio...

Q: Why can water be boiled in paper cup?

A: Step 1Water can be boiled in paper cup without burning the paper cup.

Q: When two spherical soap bubbles coalesce , V is the consequent change in the volume of contained air...

A: Given, V is the consequent change in in the volume of contained air and S is the change in total sur...

Q: The temperature of a body falls from 50 degree C to 40 degree C in 12 minutes. What will be its temp...

A: According to the Newton’s cooling law,Substitute the values,

Q: State and Explain right hand thumb rule.

A: Right hand thumb rule: When holding the current-carrying straight conductor in your right hand such ...