Qualification > Queries

Some physics problems, please help me, thanks!

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lqq889:
Question 1:

 Question 2:

Question 3:

astarmathsandphysics:
Here

lqq889:
Thanks very much for your help, I am appreciate it..

Fomousassimov:
I like to read stories like this. Because it's more fun.

astarmathsandphysics:
No stories here - just physics

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