In the Conservation of energy experiment if we gently compressed the loop(with spring constant k=81.45N/m) a distance of 0.028m using a cart of mass 500g. find the velocity of the cart right after it leaves the spring

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Match each scenario to the form of energy it represents

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.