Answer:
C. Weight is mass times the acceleration of gravity.
Explanation:
Weight is the force exerted by gravity. Force is equal to mass times acceleration.
Net force is basically the force an object has when changing direction, so the answer would be D.
Answer:




Explanation:
r = Radius
k = Coulomb constant = 
Electric field is given by

The charge is 

The charge is 
The charge inside will have the polarity changed

Outside the charge will be

Answer:
true
Explanation:
if there is no light it's different from when there is