Why does a comb rubbed on hair attracts small pieces of paper?
Plastic comb gets electrically charged due to rubbing & therefore it attracts tiny pieces of paper. A charged body can attract an uncharged body.
What happens when you rub a comb on a piece of wood?
We often comb longer with a wooden comb because it feels so good. The massaging action stimulates the follicles to produce more hair strands, increasing hair growth and producing thicker hair.
What happens when we comb our hair?
Combing activates your sebaceous glands, the little guys at your hair roots that produce your scalp’s natural oil (sebum). Along with keeping the scalp and hair moisturized, sebum coats the scalp surface and work to create the right pH balance, which is very important for healthy scalp.
Why is combing hair important?
When a comb is rubbed against hair force generated in it is?
This is because the comb gets charged when it is rubbed. This charge that is created when two objects are rubbed against each other is called static electricity.
What is backcombing your hair?
Backcombing (also known as teasing or ratting) is a way of combing hair which is used to create volume as well as to create certain hairstyles. Backcombing is done by repeatedly combing the hair towards the scalp, causing the hair to tangle and knot up.
What happens when you rub a comb on a piece of paper?
If the charged comb and neutral paper are separated after having touched, the molecules on the surface of the paper will take away a small number of the excess electrons from the comb. But, in the bulk of the paper, its molecules will remain neutral. Rub your comb on your hair on a dry day and bring the comb near some small pieces of paper.
What causes a paper piece to move closer to the comb?
1) The comb’s negative E field attracts each of the positive nuclei in the paper, causing them to move slightly closer to the comb (in relationship to their neutral/unbiased electron clouds).
What is the net effect between comb and paper?
4) The net effect is an attractive force between comb and paper. When the comb and paper are still separated, the paper molecules are polarized, not ionized. That is, the net charge of the paper is unchanged, each molecule still has a net neutral charge.
What happens when you rub your hair on a comb?
When you rub the comb on your hair electric charges are accumulated on it, but the charge distribution is localized. This means that the electric field is non-uniform. This electric field polarizes the paper pieces and there are both positive and negative polarization charges.