A person combs his hair on a dry day. The comb causes `10^(22)` electrons to leave the person's hair and stick to the comb. Calculate the charge the comb carries.

If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why?

When s person combs his hair, static electricity is sometimes generated by what process?

Geeta has dry hair. A comb ran through her dry hair attracts small bits of paper. She observes that Neeta with oily hair combs her hair, the combs could not attract small bits of paper. She consults her teacher for this and gets the answer. She then goes to the junior classes and shows this phenomenon as physics experiment to them. All the juniors feel very happy and tell her that they will also look for such interesting things in nature and try to find the answer. She succeeds in forming a science club in her school. Read the above passage and answer the following questions. (i) What according to you are the values displayed by Geeta? (ii) Explain the phenomenon involved.

What kind of electric charge is acquired : by a plastic comb rubbed with dry hair ?

A person carrying 10 bricks each of man 2.5 kg. on his head moves to a height 20 metres in 50 seconds. Calculate the power spent in carrying bricks of the person.

In a maize comb, the silky hairs represent: