When you push a 1.90-kg book resting on a tabletop, you have to exert a force of 2.10 n to start the book sliding. once it is sliding, however, you can use a force of only 1.06 n to keep the book moving with constant speed. part a what is the coefficient of static friction between the book and the tabletop?

When a resistor with resistance r is connected to a 1.50-v flashlight battery, the resistor consumes 0.0625 w of electrical power. (throughout, assume that each battery has negligible internal resistance.) what power does the resistor consume if it is connected to a 12.6-v car battery? assume that r remains constant when the power consumption changes.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

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