Find the wavelengths of extremes at a temperature

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Q. A box whose mass is 25kg is moved across a horizontal floor by dragging it with a rope attached to the front end. if the rope makes an angle of 30 degrees with the horizontal and if the coefficient of friction is 0.3, find the force exerted by the man on the rope, and the work done in dragging the box over a distance of 15m.

Q. The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 32°C.

Reference no: EM1358387

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