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An electric fan is running on HIGH. After fan has been running for 1.0 minutes, the LOW button is pushed. The fan slows down to 93.0 rad/sec in 1.89 seconds. The blades of the fan have a diameter of 6.7 meters and their deceleration rate is 4.5 rad/sec2.
1) What was the initial angular speed of the fan in rev/sec? ?i = rev/sec
A 2.30-MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. Calculate the speed of the fetal heart wall at the instant this measurement is made
A 5kg particle is hit with a 5N force for 0.2s towards a wall 5m away. How long does it take for the particle to hit the wall
On vacation, your 1350 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.15 m/s2. What force does the trailer exert on the car
A rod moving in the positive x direction is measured by a stationary observer to have a length of 10.0meters, Find the speed of the second observer as measured by the stationary observe
Incoming UNPOLARIZED light of intensity 17 LUX passes through a linear polarizer, with its transmission axis oriented vertically. Calculate the final intensity of the light after it has passed through both polarizers
A meter stick is pivoted at its 50-cm mark but does not balance because of non uniformities in its material that cause its center of gravity to be displaced from its geometrical center. Find the mass of the meter stick and its location of its cente..
A 30 kg child is sitting on the outer edge of a 100 kg carousel with a radius of 2.0 m. What is the moment of inertia of the carousel and child
Consider a large chemical storage tank that is 100 ft in diameter and 25 feet tall. What is the force exerted by the fluid on the base of the tank
Find the first and second derivative with respect to x of f(x) = (exp(x/a)-exp(-x/a))/2, where exp(x)=e^x is the exponential function.
Starting from rest, a boulder rolls down a hill with constant acceleration and travels 3.00m during the first second. how FAR does it travel during the second second
A 4.80 long, 600 steel beams extends horizontally from point where it has been bolted to the framework of a new building under construction. A 75 construction worker stands at the far end of beam.
A 10 μF capacitor is charged to 15 V. It is next connected in series with an uncharged 5.00-μF capacitor. The series combination is finally connected across a 50.0-V battery, as diagrammed. Find out the new potential differences across the 5-μF an..
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