Physics, 04.02.2021 19:20 my1445

During Physics class, students are asked to explain why a balloon can get stuck to the ceiling after being rubbed with fur, and what does this prove about the electric force. Below are their answers: Student Why the balloon gets stuck to the ceiling Student What do we learn about electric force
A since the balloon shares large numbers of electrons with the ceiling when they touch, they will attract E There is no evidence that electric force keeps the balloon on the ceiling
B The balloon material always sticks to the ceiling, it has nothing to do with static electricity F Electric force can be attractive
C protons are transferred from the balloon to the wall and they will attract G Electric force must be stronger than gravity since the balloon doesn’t fall
D By induction, the balloon will repel negative charges on the surface of the ceiling, so the surface of the ceiling becomes positive and they will attract H Electric force acts only when objects touch

What student(s) are correct in their explanations or conclusions?

Question 5 options:

Only A is correct

Only A and E are correct

Only D, G and F are correct

Only D is correct

Only B, H and F are correct

Answers: 2

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During Physics class, students are asked to explain why a balloon can get stuck to the ceiling after...