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A 720 gram grinding wheel 30.0cm in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the center.) When it is in use, it turns at a constant 215rpm about an axle perpendicular to its face through its center. When the power switch is turned off, you observe that the wheel stops in 44.0s with constant angular acceleration due to friction at the axle. What torque does friction exert while this wheel is slowing down? (N*m, in the direction opposite to the motion)
A fine metal foil separates one end of two pieces of optically flat glass, as in Fig. 24-33. How thick is the foil
The electric field caused by a certain point charge has a magnitude of 6800N/C at a distance of 0.200m from the charge
An 80 kg weightlifter is standing holding a bar weighing 981 N directly over his head. What is the GRF (ground reaction force) acting on the weightlifter's feet
A spring with k = 30.0 N/m is at the base of a frictionless 30.0° inclined plane. how far up the incline does it travel before coming to rest
How much work must be done on the electron to move it to negative plate if it is initially positioned 2.86 mm from the positive plate.
What is this force in Newtons.
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.9m, What is the magnitude of the net displacement of the mouse
Two point charges totaling 9.00 µC exert a repulsive force of 0.250 N on one another when separated by 0.537 m. What is the charge on each
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
Light in vacuum is incident on the surface of a glass slab. In the vacuum the beam makes an angle of 41.5° with the normal to the surface, What is the index of refraction of the glass
Two infinitely large plates are arranged so that they are parrallel, and seperated by a distance d. What is the approximate electric field outside the plates
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