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A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.602 and the coefficient of kinetic friction is 0.327. How much force is needed to begin moving the book?How much force is needed to keep the book moving at constant speed once it begins moving?
A 1.00 kg chunk of ice at a temperature of 0 C and pressure of 1.0 atm melts completely to water of 0 C. What is the change of the entropy of the ice
Two thin lenses with a focal length of magnitude 10 cm, the first diverging and the second converging, are located 7.88cm apart. How far from this first lens is the final image formed
A ball is thrown vertically upward with a speed of 15.0 m/s. How long does it take to reach its highest point
A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. What are the charges of the sphere and the rod
A 2.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal
A bolt comes loose from underneath an elevator that is moving upward at a speed of 6.9 m/s. What is the speed of the bolt when it hits the bottom of the shaft
An eagle is flying horizontally at 5.7 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, giving it a charge of -15.0 microC. find the electric field: (a) just inside the paint layer, b) just outside the paint layer and c) 5..
A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 24.5 cm in a uniform electric field, what is the net charge on the ball
A transverse wave is propagation on water surface and is described by the equation y=0,01sin[(1,0)x + (30) t ], find the magnitude of velocity of the particle's displacement
A sound wave traveling at 340 m/s is emitted by the foghorn of a tugboat. An echo is heard 2.60 s later. How far away is the reflecting object? reply in units of m.
A convex mirror has a radius of curvature of 44.0 cm. When a 5.60 cm tall object is placed in front of the mirror, the magnification is 0.250. How far is the object from the mirror
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