120 J of work was done to lift an object 6 m above the ground. How much force was applied to this
object and what was its mass?
Select one:
120 N, 5 kg
O
20 N, 3.04 kg
O
720 N, 12.3 kg
O 20 N, 2.04 kg

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?