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What force must be applied to push a carton weighing287 newtons up a 19° incline, if the coefficient of kineticfriction is 0.3. Assume the force is applied parallel to the incline and the velocity is constant.
a 2 kg block is taken from a furnace where its temperature was 650 degree c and placed on a large block of ice at 0
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
at the instant the traffic light turns green an automobile starts with a constant acceleration a of 2.2 ms2. at the
An automobile travels on a straight road for 44 km at 49 km/h. What is the average velocity (in km/h) of the car during this 88 km trip? (Assume that it moves in the positive x direction.)
an electric circular saw is designed to reach its final angular speed starting from rest in 1.40 s. its average angular
comet orbits are highly elliptical. a periodic comet orbiting a two solar mass star with an orbital period of 200 years
A single slit 1.0mm wide is illuminated by 500nm light. What is the width of the central maximum (in cm) in the diffraction pattern on a screen 4.0m away
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. The left end is put on the tailgate of the truck. However the tailgate is tilted a bit, so it only contacts the boar..
Average Rate of Work The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 235 m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab.
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
A charge q1 = -7 µC is at the origin, and feels a force along the positive x-axis equal to 1.8 N. What is the x-component of the electric field
suppose the resistance between the hands is due entirely to the skin. what is the resistivity of skin
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