Incoming sensory messages are made sense of in

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.

How many atoms of nitrogen are in the chemical formula ni(w on

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?