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Suppose that when a certain sound intensity level (in dB) triples, the sound intensity (in W/m2) quadruples. Determine this sound intensity level.
Two trains are traveling toward each other in still air at 27.6 m/s relative to the ground. One train is blowing a whistle at 330 Hz. The speed of sound is 343 m/s.
The force of the wind on a small sail boat is 500 N northeast (45 degrees N of E). If the drag if the keel is 250 N acting west, what is the acceleration of the boat
If the capacitor and unductor in part (a) are connected in an L-C circuit, what will be the resonance angular frequency of that circuit
When a current of 2.0A flows in the 100-turn primary of an ideal transformer, this causes 14 A to flow in the secondary. How many turns are in the secondary
Suppose after charging a 2.5 µF capacitor to 9 V, you connect it to the second uncharged capacitor of 14 µF. What voltage will your voltmeter read across the second capacitor
Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, What is the surface charge density on the plates
A series RLC circuit consists of a 42.0 ? resistor, a 2.70 mH inductor, and a 460 nF capacitor. Determine the impedance at frequency 3000 Hz
A 0.65 percent C hypoeutctoid plain carbon steel is slowly cooled from about 950°C to a temperature just slightly above 723°C. calculate the weight percent austenite and weight percent proeutectoid ferrite in this steel. Explain it.
A 0.30 kg object is attached to a spring with force constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. Find the force on the object
Physics - Classical Mechanics : explained, A student could either pull or push, at an angle of 300 from the horizontal, a 50-kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.20. The cra..
determine the flux of uniform magnetic field B through the curved surface of a right circular cone, show that F through suface 1 = F through surface 2
A satellite orbits the earth at a distance of 10,000 miles from the earth's center. At this distance the force of gravity on the satellite is 90 lbs. What would the force (in lbs) on the satellite be if the distance were 5,000 miles instead
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