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A student gives a 5.0 kg box a brief push causing the box to move with an initial speed of 8.0 m/s along a rough surface. The box experiences a friction force of 30 N as it slows to a stop. How long does it take the box to stop?
a 25cm length of 0.26mm diameter nichrome wire is welded into a circular loop. the loop is placed between the poles of
Determine the response of an undamped spring-rn ass system to the alternating square wave of force shown in Figure by superimposing the solution to the step.
a boy pulls a 20 -kg box with a 50- N force at 37( degree)above a horizontal surface. what is the work done by the frictional force
A 1050kg car carrying four 78kg people travels over a rough "washboard" dirt road with corrugations 4m apart which causes car to bounce on its spring suspension.
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 87.5 dB. What is the combined sound level
Find an expression for the minimum frictional coefficient needed to keep a car with speed v on a banked turn of radius R designed for speed v0
If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to reach the speed limit?
A balloon whose volume is 500m3 is to be filledwith hydrogen at atmospheric pressure. How many cylinders are required
A student throws a ball vertically upward such that is travels 7.1 meter to its maximum height. Estimate what is the ball average speed
A sailboat leaves a harbor and sails 1.1 km in the direction75 degrees north of east, where the captain stops for lunch. Ashort time later, the boat sails 1.8 km in the direction 15 degreessouth of east. What is the magnitude of the resultant disp..
What is the ratio of the electric force on the bee to the bee's weight? What is the maximum possible torque on a sphere if the electric field between the transparent platesis 4.9 x 105 N/C ?
Find the rotational inertia of the thin rod about the pivot point P.
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