Elements up to iron on the periodic table are formed by ….

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form