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A packing crate is placed on a 20 degree inclined plane. If the coefficient of static friction between the plane and the crate is 0.65, Explain will the crate slide down the plan?
A 2.0 kilogram mass is pulled along a horizontal table by a string attached to 0.50 kilogram mass that hangs from a string that passes over a frictionless pulley at one end of the table. Obtain the acceleration of the 0.500 kilogram mass
A certain freely falling object requires 1.45 s to travel thelast 38.0 m before it hits the ground. From what height above theground did it fall
A very powerful vacuum cleaner has a hose 2.69 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift?
A certain spring is found not to obey Hooke's law; it exerts a restoring force Fx(x)=??x??x2 if it is stretched or compressed, Calculate the potential energy function U(x) for this spring. Let U=0 when x=0
A resistor has a resistance R, and a battery has an internal resistance r. When the resistor is connected across the battery, ten percent less power is dissipated in R than would be dissipated if the battery had no internal resistance. Discover the r..
A door 1.40 m wide and 2.20 m highweighs 280 N and is supported by two hinges, one 0.50 m from the top and the other 0.50 m from the bottom. Each hinge supports half the total weight of the door. Assuming that the door's center of gravity is at it..
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
A gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
A proton enters a uniform electric field by an initial velocity of 6x105 m/s in the x direction. The field has strength of 900 N/C, and is in the -y-direction, pointing from one plate to another as shown. If the plates are 10 cm long, how far is the ..
A 3m long cantilever with a mass of 250 kg is attached to a wall and also held in place with a steel cable that is attached to the far end of the cantilever at an angle of 30o with respect to the cantilever. A 5 kg mass too hangs from the far end of ..
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. compute the amplitude A of the motion
An empty parallel plate capacitor is charged with the charge Q= 5uC (One plate of the capacitor carries the carge +Q and the other carries the -Q). Find the capacitance of the capacitor
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