Answer:
Anybody which is in state of rest ,will be in rest if we don't apply any external force ...
Answer:
Explanation:
The fundamental charge of a single electron is
.
If there are 10 excess electrons, the net charge that would be measured should be 10 times the fundamental charge of a single electron:

Answer: C is right
Explanation: Most of the sound waves are reflected back but waves passing opening will speread to all directions outside because of diffraction