Suppose a 4000 kg elephant is hoisted 20m above earth's surface. what will be the elephant's gravitational potential energy?

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

How do we measure or think of speed in the united states?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?