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Q. A grinding wheel of radius 0.350 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75.0 N · m. Find the magnitude of the friction force.
Q. A cube of ice is taken from the freezer at -8.5 degrees celcius and placed in a 75 gram aluminum calorimeter filled with 300 g of water at room temperature of 20.0 degrees celcius . The final situation is observed to be all water at 17.0 degrees celcius. what was the mass of the cube of ice?
A rectanbular tank is placed on wheels and is given a constant horizontal acceleration a. display that, at steady state, the angle made by the free surface with the horizontal is given by tan(delta)=a/g.
A projectile is launched from the top of a cliff above level ground. At launch the projectile is 35 meters above the base of the cliff and has the velocity of 50 meters per second at an angle 37° with horizontal. Air resistance is negligible.
Whole blood has a surface tension of 0.068 N/M & a density of 1050kgm-3.what weight can whole blood rise in a capillary blood vessel that has radius 2.0 x 10-6 if the contact is zero.
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
Find out the resulting values of the processional rate
An 85 kg spacewalking astronaut pushes off a 655 kg satellite, exerting a 115N force for the 0.600 s it takes him to straighten his arms.
An electron moves in the positive x-direction a distance of 2.38 m in 2.95 x10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.63m in 3.53x 10-8 s.
Fairgoers ride a Ferris wheel with a radius of 4.35m, the bottom of which is 1.75m from the ground. The wheel completes one revolution every 30s. A passenger drops his keys when he is three quarters of the way up and at the 10 o'clock position. Wh..
Coherent light with wavelength 546 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.86 {rm mm} from the center o..
A piston, A, as shown below, has a diameter of 0.81 cm. A second piston, B has a diameter of 3.9 cm. conclude the force, F, necessary to support the 508.0 N weights in the absence of friction.
An old trick to find out if a train is coming is to put your ear on the rails of the track. Why is this more effective than just listening for the sounds the train makes in air.
What is the greatest angle of elevation
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