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A rope attached to a 20 kilogram wood sled pulls the sled up a 20 degree snow covered hill. A 10 kilogram wood box rides on top of the sled. If the tension in the rope steadily increases, determine at what value of the tension does the box slip.
the m777 lightweight 155mm howitzer is a piece of artillery whose rounds are ejected from the gun with a speed of
A thin film of oil covers the surface of a glass of water. White light is incident on the top surface. A red spot is observed when viewed normal to the surface.
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor at constant speed. What is the work done by friction on the crate
A van of mass 1420 kilogram traveling at 20 m/s is at the foot of a hill that rises 120 meter in 2 kilometer. Calculate the average power delivered by the van engine
A 3.9- cm-radius ball rolls down an inclined plane from rest at the top. How long is the plane
A car traveling 56 km/h is 23.0 m from a barrier when the driver slams on the brakes. What was the car's constant deceleration before impact
Assume the magnitude of the electric field on each face of the cube of edge L = 1.03 m in the figure below is uniform and the directions of the fields on each face are as indicated. (Take E1 = 35.7 N/C and E2 = 27.5 N/C.)
At a construction site workers need to know height of some scaffolding. Assuming acceleration due to gravity is 9.8 m/s^2 what is the height of the scaffolding
it is claimed that some professional baseball players can see which way the ball is spinning as it travels toward home
A 1.7kg block oscillates on a spring with spring constant 16N/m . At t = 0 s the block is 20 cm to the right of the equilibrium position, obtain the period of the oscillation.
question a 1.03 10-3 microf capacitor has an initial charge of 0.100 c. when a resistor is connected across the
in a pool game a cue ball traveling at 0.80 ms hits the stationary eight ball. the eight ball moves off with a velocity
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