Gravitational potential energy is potential energy based on what? a. temperature
b. height
c. length
d. volume

What are the three ways that an object can accelerate

What are similarities and differences between refraction, reflection, diffraction and absorption?

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units