Measuring scale should be made up the metal whose linear expansivity is negligibly small. Why?

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer

What happens to an isotope during radioactive decay?