How much work will be done in bringing a charge of 3 x 10^-2 coulombs from infinity to a point P at which the potential is 20 V? Can anyone explain this ?

Does any one know what real love is and would anyone be willing to share it with me?

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.