Question

1. what is friction ?
2. does pure water conduct electricity ? if not why ??
3. write the full form of LED ?

Answer 1

(1)This force is static friction force, which is the force exerted on the surface by another when there is no motion between the two surfaces. Static friction force acts in response to a force trying to cause a stationary object to start moving. (2) Pure water cannot conduct electricity, because it does not contain ions. Because of diluting pure waterwith acid or a base or a salt, because they produce ions due to the dilution.Pure water does not conduct electricity.Only water can conduct electricity because it has some minerals present in it. (3)Light Emiting Diode

Answer 2

Friction keeps us from slipping and falling everywhere. It is the resistance formed between 2 surfaces in contact. ... Friction always opposes the motion or attempted motion of one surface across another surface. As the two surfaces slide against each other, their contact is anything but smooth.

No, pure water does not cunduct electricity because there is no charge particle(ions) persent in pure water.

Full form of LED (light emitting diode)