# Problem: When a glass rod is rubbed with a piece of silk, the glass rod acquires a positive charge and the silk acquires a negative charge. This process signifies that A) the glass rod was not rubbed very hard with the silk. B) the glass rod lost electrons to the piece of silk. C) the glass rod was rubbed very vigorously with the silk. D) the glass rod gained electrons from the piece of silk.

🤓 Based on our data, we think this question is relevant for Professor Paddock's class at UCSD.

###### Problem Details

When a glass rod is rubbed with a piece of silk, the glass rod acquires a positive charge and the silk acquires a negative charge. This process signifies that

A) the glass rod was not rubbed very hard with the silk.

B) the glass rod lost electrons to the piece of silk.

C) the glass rod was rubbed very vigorously with the silk.

D) the glass rod gained electrons from the piece of silk.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Charging Objects concept. You can view video lessons to learn Charging Objects. Or if you need more Charging Objects practice, you can also practice Charging Objects practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofWhen a glass rod is rubbed with a piece of silk, the glass r...as low difficulty.

How long does this problem take to solve?

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Paddock's class at UCSD.