Why is it important for the path of a circuit to be circular?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

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

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?