Amixture is what you get when you combine two substances in such a way that no chemical reaction occurs between the components. a solution is a mixture that looks exactly the same everywhere. which of these mixtures is not a solution?

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.