Question

Classical physics is a good approximation to modern physics under certain circumstances. What are they?

Answer 1

Classical physics is a good approximation to modern physics under these certain circumstances: Matter must be moving at speeds less than about 1% of the speed of light, the objects dealt with must be large enough to be seen with a microscope, and only weak gravitational fields, such as the field generated by the Earth, can be involved.

Step-by-step explanation:

Answer 2

Answer and Explanation:

In classical physics we study about macroscopic objects and in modern physics we study about microscopic objects but under some circumstances classical physics is a approximation to modern physics such as

• The object must be microscopic but they should be large enough so that we can see that through a microscope
• The speed of the object should be very less it should be about 1 % of the speed of the light
• They should be involved with very week gravitational field