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A 0.5 kg box is sliding with a speed of 6m/s on a frictionless, level surface toward a spring of force constant k. It hits the spring and compresses it.
a) When the spring is compressed 0.1m, the box's speed is 2m/s. What is the force constant k?
b) How far will the spring be compressed when the box's speed drops to 0?
Your team of test engineers is to release the parking brake so an 848.0-kg car will roll down a very long 6.1 percent grade in preparation for a crash test at the bottom of the incline. What is the terminal speed for the car rolling down this grade
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A 2500 kg car rounds a flat curve of radius 75 m at speed of 80 km/h. if the pavement is icy and the force of static friction is 6000 n, what is the maximum speed the car could safely go around the curve
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A figure skater is spinning at a rate of 1.0 rev/s with her armsoutstretched. She then draws her arms in to her chest,reducing her rotational inertia to 67% of its original value. What is her new rate of rotation?
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a scaffold of mass 56 kg and length 5.5 m is supported in a horizontal position by a vertical cable at each end. a
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A Styrofoam box has a surface area of 0.85 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam
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