When the object is big enough to contract itself into a ball.
The amount of matter in an object ismass....anything that occupies spaca and has weight is called matter.....
Answer:
Check image.
Explanation:
This is what my solution is, not a professional tutor so take my answer with a grain of salt and check.
Answer:
force on electron will be equal to 
Explanation:
We have given magnitude of electric field E = 600 N/C
Charge on electron 
We have to find the electric force on the electron
Force in electric field is equal to
, here q is charge and E is electric field
So force will be equal to 
So force on electron will be equal to 
Answer: its motion
Explanation: Potential energy is stored energy when an object is without motion, kinetic energy is the energy when a object is in motion.