If element X has 33 protons, how many electrons does it have?

How did Dalton think atoms formed a new substance?

Why might the study of matter and energy be important

In an isolated system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances. What might have caused the difference you have reported?

Susan and Hannah are each riding a swing. Susan has a mass of 25 kilograms, and Hannah has a mass of 30 kilograms. Susan's swing moves with a velocity of 10 meters/second, while Hannah's swing moves with a velocity of 8.5 meters/second.

Suppose that an electric charge is produced on one part of a body. If the charge spreads through the entire body, the body is most likely made of A. porcelain. B. plastic. C. metal. D. oil.

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

1. Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? 2. Should car companies be required to produce electric cars?

How far will a ball travel that goes 35 meters per second for 18 seconds?

a 5.00 kg ball accelerates at a rate of 2.00 m/s squared for 1.50 seconds. calculate the balls momentum after the acceleration

An ice cube is dropped into a glass of water. Describe the motion of the ice cube and explain why it moves this way