What is the acceleration due to gravity at a location where a 15 kilogram mass weighs 45 newtons?

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

Which changes of state do the labels represent? a: b: c:

What happens to an isotope during radioactive decay?