Physics, asked by timung3999, 1 year ago

(b) A piece of chalk wears out as it is used on a black board

Answers

Answered by sunny170

3

a piece of chalk wears out as it is used on a blackboard because it's molecules are used up while writing on the blackboard.
hope it helps

Previous Question

Next Question

Similar questions

Math, 8 months ago

दो या दो से अधिक प्रकार की कोशिकाओं से बने उद्योग को क्या कहते हैं...

English, 8 months ago

use the correct adjective order to complete this please give the answers as soon as possible...

Computer Science, 8 months ago

Which part of the computer can not be damaged by a computer viruses.

Math, 1 year ago

divide 21 into two parts in such a way that 10 times of one part is 1 more than 9 times of the other...

Math, 1 year ago

Length of a room is 6m longer than its breadth. If the area of the room is 72m ^2 its breadth will be...

Math, 1 year ago

The sum of two numbers is 8 determine the number if the sum of their resciprocal is 8/15 .

English, 1 year ago

Define simile and metaphor and personification.

Social Sciences, 1 year ago

Why do some people thnk that it's nt correct to politicize social divisions ? give 3 reasons...