A toy car rolls down a ramp. Which force causes the car to move

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)

What is the role of lenses in microscopy?