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A spool of wire of mass 4.1 kg and radius 0.35 m is unwound under a constant wire tension 4.4 N. Assume the spool is a uniform solid cylinder that rolls without slipping.
Find the friction force on the bottom of the spool. Let right be positive.
Calculate the energy associated with the magnetic field of a 191 turn solenoid in which a current of 2.44. A produces a magnetic flux of 3.74 x 10-4 T • m2 in each turn.
You apply a constant force F? =(?68.0N)i^+(36.0N)j^ to a 400kg car as the car travels 47.0m in a direction, How much work does the force you apply do on the car
A block rests on a horizontal surface, and the coefficient of static friction between the block, Find the frequency at which the block begins to slide on the surface
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply, find the current flowing through the third light bulb
A simple pendulum consists of a bob of mass 1.8kg attached to a string of length of 2.5m. The pendulum is held at an angle of 30 degrees from the vertical by the light horizontal string attached to a wall.
An ideal spring with a stiffness of 379N/m is attached to a wall, and its other end is attached to a block that has a mass of 16-kg. The spring/block system is then stretched away from the spring's relaxed position until 59J of mechanical potentia..
A crate is dragged across a rough floor by a force of 120N asz` shown below. A friction force of 40N acts to slow the motion of the crate. what is the net work done
An object 2.00 cm high is placed 41.0 cm to the left of a converging lens with a focal length of 30.0 cm, Determine the magnification of the final image
what is the minimum coefficient of static friction required between tires and race track if the car is to stay on the track at a speed of 130m/s.
It again strikes the floor. Find (c) the time interval from when the ball was launched to when the ball strikes the floor and (d) the horizontal distance from the point where the ball was launched to the point where the ball strikes the floor.
a car initially running at 10 m/s applies brake and stops in 10 secs. What is the deceleration produced by the brakes
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s . Suddenly one of the passengers realizes she has left her camera on the ground.
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