As the elephant falls from 10 m does it lose or gain ke? explain.

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

Carbon 14 is a naturally occurring stable

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?