What is energy? Select the correct answer below: The motion an object possesses The capacity to supply heat or do work The downward flow of temperature in an object all of the above

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?