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An 18.3 kg block is dragged over a rough, hor izontal surface by a constant force of 135 N acting at an angle of 27.5 degrees above the horizontal. The block is displaced 75.8 m, and the coefficient of kinetic friction is 0.18 . Find the work done by the 135 N force. The acceleration of gravity is 9.8 m/s ^ 2 Answer in units of J. Find the magnitude of the work done by the force of friction . Answer in units of J.
a hole punch has a diamter of 8.0 mm and presses onto ten sheets of paper with a force of 6.7 kN, If each sheet of paper is of thickness .20 mm, what is the shear stress
A bicycle is turned upsdie down and has one wheel spinning at 95.0 rpm. The wheel slows uniformly to a stop in 45.0 seconds. What is the angular distance (in rad) traveled during this time
Express his height in meters, using the appropriate number of significant figures.
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
A hall sensor made from silicon is 0.40 nm thick and has a charge carrier density of 2.0 x 10 ^19 m^-3. What is the value of the magnetic field
a baseball thrown from the outfield is released from shoulder height at an initial velocity of 29.4 ms at an initial
The current in a single-loop circuit with one resistance Ris 7.0 A. When an additionalresistance of 3.0 is insertedin series with R, the current drops to 3.0 A. What is R?
When monochromatic light shines perpendicularly on a soap film (n =1.33) by air on each side, the second smallest nonzero film thickness for which destructive interference of the reflected light is observed is 296nm. Describe the vacuum wavelength of..
A tennis ball of mass m = 60.0 g and speed v = 25.0 m/s strikes a wall at a 45º angle and rebounds with the same speed at 45º
consider the cascade of two 300l tanks shown in the figure below. suppose that tank 1 initially contains 300litres of
q. a small remote-control car with a mass of 1.7 moves at a constant speed of 12.0 in a vertical circle inside a
A block with a coefficient of kinetic friction uk = 0.4 slides down a inclined plane. What acceleration does it experience?
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