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An organ pipe that is open at both ends is 3.8 long. What is its fundamental frequency?
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A 25.0mH inductor, with internal resistance of 25.0 is connected to a 110-Vrms source. If the average power dissipated in the circuit is 50.0 . What is the frequency?
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How many 400 Calorie donuts can she eat a day to supply that energy?
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(a) A dentist uses a small mirror of radius 40 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 19 mm from the tooth, what is the magnification of the image? (b) A production line inspector wants a mirror that produces an upright image with magnification of...
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An AC generator with an output rms voltage of 42 V at a frequency of 60 Hz is connected across a 9 F capacitor. Find the following. (a) capacitive reactance (b) rms current A (c) maximum current in the circuit 3 A (d) When does the capacitor have its maximum charge? 4 1/3 cycle...
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How much current is flowing in a wire 4.10 m long if the maximum force on it is 1.200 N when placed in a uniform 0.0710 T field?
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At time t = 0 , the pebble is at the top of the tire, as shown. (Intro 1 figure)
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A collapsible plastic bag (Fig. P9.19) contains a glucose solution. If the average gauge pressure in the vein is 1.34 104 Pa, what must be the minimum height h of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is 1.05.
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The drawing shows two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.050 kg/m. Each of the four strings suspending the wires has a length of 1.2 m. When the wires carry identical currents in opposite directions, the angle between the strings...
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calculate the difference in work function for these two surfaces
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- (a) What is the average angular acceleration of the Earth?
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