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A flywheel of mass 182 kg has an effective radius of 0.61 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel).
(a) How much work is done to bring this wheel from rest to a speed of 119 rpm in a time interval of 27.2 s?
(b) What is the applied torque on the flywheel (assumed constant)?
A piece of wood is 0.640m long, 0.230m wide, and 7.00×10^?2 m thick. What is the mass of this volume of lead
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You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
A 45 kg woman cheats on her diet and eats a 439 Calorie (439 kcal) jelly donut for breakfast. If the human body is only 28% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfas..
a 12.0 g plastic ball is dropped from a height of 2.50 m, How much mechanical energy was lost during the balls fall
Nichrome wire of cross-sectional radius 0.780 mm is to be used in winding a heating coil. find the length (in meters) of wire needed to wind the coil
A 18-cm-long nichrome wire is connected across the terminals of a 1.5V battery. what is the wire's diameter
Consider a Young's two-slit experiment in which the wavelength of light is 45% smaller than the distance between the slits. How many complete dark fringes would be seen on a distant screen
A container with a one-liter capacity at 27 degrees C is filled with helium to a pressure of 2 atm. (1 atm = 1.0x10^5 N/m^2.) How many moles of helium does it hold
If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.90 T field (perpendicular to the wire), what force is exerted on this segment of wire
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