Acoin has a mass of 3.0g. calculate the nuclear energy that would be required to separate all the neutrons and the protons from each other. for simplicity assume that the coin is made up of copper atoms(of mass 62.92960u)

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class