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A 214 kilogram crate rests on a surface that is inclined above the horizontal at an angle of 18.4 degree. A horizontal force (magnitude =541 Newton and parallel to the ground, not the incline) is required to start the crate moving down the incline. Find the coefficient of static friction between the crate and incline?
In the figure, a point charge 1.3μ C is adistance d/2 directly above the center of a square of side d = 0.26cm . What is the magnitude of the electric flux through the square? (
A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45 degrees. With what speed was it thrown
A bullet with a mass of 4.95 g and a speed of 940 m/s penetrates a tree horizontally to a depth of 6.15 cm. Calculate the magnitude of this frictional force
Think about two concentric spherical thin metal shells of radii a and b, where b ≥ a. The outer shell has a charge Q, however the inner shell is grounded. This means that the potential on the inner shell is the similar as the potential at points far ..
Someone is pulling a suitcase through an airport at constant speed. The handle of the suitcase makes an angle of 55 degree with the horizontal. what is the pulling force being exerted by the person parallel to the handle
Department Alpha had no beginning inventory. The department added direct materials of $100,000 and conversion costs of $150,000 during the month of July. Materials are added at the beginning of the process and conversion costs are added evenly thr..
Two cars, starting from rest at x=0 at t=0, are racing. Car A and B both accelerate in a straight line at a constant acceleration (a=4m/s2) for 10s. After 20s, Car B crosses the finish line. How far is the finish line from the starting point of the..
A hot iron horseshoe (mass = 0.38 kg), just forged (Fig. 14-16), is dropped into 1.68 L of water in a 0.33 kg iron pot initially at 20 °C. estimate the initial temperature of the hot horseshoe
A 50 kg bag of sand at 25 C falls 10 m onto the pavement and comes to an abrupt Stop. What is the change in internal energy in the sand
Evaluate the electrostatic energy of two opposite charges
A 70 kg window cleaner uses a 20 kg ladder that is 5.4 mlong. He places one end on the ground 2.2m from a wall, What is the angle of this force on the ladder
A body of mass 6 kg is acted upon by a force which causes a displacement in it given by x = t2/4 metre where t is the time in seconds
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