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a high speed cooling fan has a maximum angular speed of 15.0 rad/sec when operating correctly. the device idles at an angular speed of 2.5 rad/sec and accelerates to operating speed in a time of 2.0 sec. calculate the angular acceleration when the device goes from idle speed to operational speed.
A father and a daughter balance a teeter-totter to illustrate the principle of the lever. If the father whose weight is 150 N is 8 m from one end, how far away on the opposite side of the fulcrum should the 50-N daughter stand to balance the teeter-t..
Assume the system rotates in the yz plane about the x axis with an angular speed of 2 rad/s. Find out the moment of inertia of the system about the x axis.
The space shuttle performs a retro burn for 3.5min to go from an orbital velocity of 17,500mph to re-entry velocity of 5000mph.
Illustrate what is the minimum centripetal acceleration the truck must have going around the circular curve with radius 0.35 km so that it will clear the gully and land on the other side?
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
rotates to provide an "artificial gravity" of 3.10 m/s2 for persons who walk around on the inner wall of the outer rim. Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
What is the horizontal distance x to the base of the wall supporting the mirror of the near point on the floor that can be seen reflected in the mirror . What is the speed of the third fragment? Overlook effects due to gravity.
Find a largest image that can be completely imaged on a 35mm film.
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. (a) How long does it take to give the wagon a velocity of 7.4 m/s west? (b) How far from the starting po..
In a series R-L-C circuit, the phase angle is 40.5?, with the source voltage leading the current, Find the reactance of the inductor
Illustrate what happens if the party against whom enforcement of an oral contract is sought admits in court that a contract was made?
A 116 kg chesterfield is pushed up a frictionless ramp at the constant speed by a delivery person. If the ramp is inclined at 25.80° to horizontal. What is the magnitude of the normal force that is exerted on the chesterfield by the ramp.
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