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The picture below shows a model of a human leg with a heavy weight on the ankle. It represents a person lying on his back doing leg-lifts to exercise the quadriceps. In the model, the stick (c.g. in the middle) has a length of 1.24 m and a mass of 7.50 kg, while the added mass of 2.60 kg is located 24 cm from the right (non-pivot) end of the stick. The stick makes a 55° angle with the horizontal. The stick is supported by a hinge at the left end (pivot) and a rope attached 16 cm from the left end making a 12° angle with the stick.
a) What is the magnitude of the gravitational torque (in N·m) due to the weight of the stick?
A stainless steel flask with volume 10 liters is filled with 1.4 moles of helium gas at 27 C. What is the average RMS speed of the helium atoms now
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An underwater camera has a lens of focal length 35.0 mm and a maximum aperture of f/2.80 . The film it uses has an emulsion that is sensitive to light of frequency 6.00×10^14 Hz. If the photographer takes a picture of an object 2.80 m in front of ..
The next three problems refer to two point charges A and B on the x-y plane, Find the x-coordinate of the point on the x-axis where the electric field is zero
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A neodymium laser emits a pulse of radiation, providing 125 TW of power for a duration of 1.00 ns. How much energy is contained in that pulse
Illustrate what is the number of shares to be used in computing basic earnings per share and diluted earnings per share, respectively, for the year ended December 31, 2007?
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