When a force acts upon an object and movement occurs it's called an ?

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Drug abuse will not lead to physical and psychological dependence. true or false ?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?