A ball of mass m = 10 kg is lifted up to some height and has 300 J of potential energy. Then the ball is droped. What is its velocity at the bottom of its descent.
What is the balls original height?

What happens to atoms and chemical bonds during a reaction?

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?