What is the mass of a truck in grams of it produces a force of 1500N while accelerating at a rate of 6 m/s²?​

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.

What are the applications of electromagnetic waves

Simple machines can a. increase force only b. decrease force only c. increase or decrease force