If one height is 15 cm and another height is 30 cm find work done by effort and work done by load​

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Acar travels 40m in 8 seconds find the car speed

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.