What is the answer to this problem 2.40e+3kg

Phase changes are chemical changes. true or false

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

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