a) Take two identical straws and suspend one piece freely. Rub the other straw with a piece of paper. Bring the rubbed end of the straw near the suspended one. What do you observe from this activity? Can you tell which type of force it is? b) Comb your dry hair. Bring the comb to small pieces of paper. What do you observe? Explain.
Harshit Singh , 2 Years ago
Grade 12th pass
