ANSWER:
250 J
STEP-BY-STEP EXPLANATION:
F = 20N is required to stretch the spring by 4 meters
We know that the force is equal to:
We solve for k (spring constant):
The work done in stretching the spring is given by the following equation (in this case the stretch is 10 meters:
The work required is 250 joules.
Answer:
The electric potential (voltage) 
produced by a point charge 
, at any point in space, is given by the following equation:
Where:
is the Coulomb's constant
is the distance
The result is a scalar quantity, is defined as the electric potential energy per unit of charge and determines the electric influence exerted by the charge on that point of space.
Answer:
In a collision, there is a force on both objects that causes an acceleration of both objects; the forces are equal in magnitude and opposite in direction. When you hit a drum with a drumstick, there is a collision. The force both objects release causes the drumstick to bounce on the drum.
Explanation:
hope this helps :)
law of conservation of matter<span> - a fundamental principle of classical physics that </span>matter<span> cannot be created or destroyed in an isolated system.</span>conservation<span> of mass, </span>conservation of matter<span>, </span>law of conservation<span> of mass.</span>
Answer: it would be distributed uniformly.
Explanation:
charge carriers in conductors are free to move around and that charge on a conductor spreads itself out on the surface of the conductor.
When the two conducting spheres are brought together to touch, it is as though they become one single big conductor and the total charge of the two spheres spreads out across the whole surface of the touching spheres. When the spheres are moved apart again, each one is left with half of the total original charge.
