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SAE-30 oil at 40-C fills the gap between the stationary plate and the 20-cm-diameter rotating plate shown in Fig. 7.15. Estimate the torque needed assuming a linear velocity profile if O ¼ 100 rad=s.
figure 7.15
A man applies a force of F = 3.00 102 N at an angle of 60.0° to a door, x = 2.20 m from the hinges. Find the torque on the door
The specific heat of water is 4186 J/(kg-degree Celsius) and the specific heat of copper is 387 J/(kg-degree Celsius). What is the mass of water
you have a mechanism by which you can use a magnetic spectrograph to chose the energy of the beta rays from a 137cs
A spring with spring constant 12N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its maximum speed
A train slows down as it rounds a sharp horizontal trun,going from 90km/h to 50.0km/h im the 15.0s it takes to round thebend. the radius of the curve is 150m. Compute the acceleration atthe moment the train speed raches 50.0km/h . Assume the train..
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A major leaguer hits a baseball so that it leaves the bat at a speed of 30.0m/s and at an angle of 38.2degrees above the horizontal. Calculate the horizontal component of the baseball's velocity at an earlier time calculated in part (A)
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5639.0 tonnes to a height of h = 14.0 m (1 tonne = 1000 kg). How much work is done by the crane
Two sinusoidal waves of the same period, with amplitudes of 5.5 and 7.5 mm, travel in the same direction along a stretched string; What is the phase constant of the other wave
A slingshot consists of a light leather cup, containing astone, that is pulled back against two parallel rubber bands. Ittakes a force of 15 N to stretch either one of these bands 1.0cm.
To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What are the drag forces at 80 km/h and 109 km/h for a Toyota Camry
A 2.00×104kg railroad car is rolling at 1.00m/swhen a 5000kg load of gravel is suddenly dropped in.What is the car's speed just after the gravel is loaded
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