A40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 j. what is the height of the hillside? (formula: pe = mgh)
3.9 m
4.0 m
39.2 m
40.0 m

Asher cycles 12 miles in 16 hours. what is his speed?

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.)

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat