Answer:
option "c" is correct
Explanation:
Physical science or Physics is the study of matter, energy and their mutual relationship.
Answer:
mass and distance
Explanation:
force is mass while motion can also be regard as distance or movement
I'd say B.) Increasing the voltage of the battery.
Answer:

Explanation:
Since we know that two sphere is oppositely charged so net electric field at the mid point of two balls will be sum of the electric field due to each ball at the mid point
So we know that

here we know that



so we have


Sound waves are mechanical(?) waves?