Approximately how much more energy is released in an earthquake of richter magnitude 6. 5 than in a magnitude 5. 5 earthquake?.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter