an object on a number line moved from x=15cm to x-165cm and then moved back to x=25cm. the time interval is 100s. find the average speed of the object.

What is a subatomic particle with a negative charge and very little mass?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Discuss the difference between thermal energy and heat. (terrance) terrance, egolf, r., congdon, donald. physical science student text, 5th edition. bju press, 2014. vitalbook file.