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Two loudspeakers in a plane, 5 m apart, are playing the same frequency. If you stand 12 m in front of the plane of the speakers, centered between them, you hear a sound of maximum intensity. As you walk parallel to the plane of the speakers, staying 12 m in front of them, you first hear a minimum of sound intensity when you are directly in front of one of the speakers. What is the frequency of the sound? Assume a sound speed of 340 m/s.
Hz.
A long, straight wire runs along the axis of the solenoid, carrying a current of 15. Find out the magnitude of the net magnetic field a radial distance of 0.80 from the straight wire.
A 12.0 resistor, 10.0 mH inductor, and a 50.0 µF capacitor are connected in series to a 55.0 V (rms) source having variable frequency. Find out the energy delivered to the circuit during one period if the operating frequency is twice the resonance..
A nearsighted patient's far point is 0.723 m from her eyes. What is the distance between her eyes and the glasses
A drunk driver in a 1600 kg car plows into a 1500 kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 19 m before stopping. If the effective coefficient of friction is 0.78, how fast was the dru..
A bicycle with 0.80m -diameter tires is coasting on a level road at 5.6m/s. A small blue dot has been painted on the tread of the rear tire. What is the angular speed of the tires
0.0023 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2, find the electric field energy density between the plates
The distance to the Andromeda Galaxy is estimated at about 2 x 10(6) light years. A light year is distance traveled by light in one year; if the speed of light is 3 x 10(8) m/s, about how far is it from our galaxy to Andromeda? (1 year =3.15 x 10(..
Illustrate what tangential speed v must the bob have so that it moves in a horizontal circle with the string making an angle 19.0^circ with the vertical?
A 60 kg woman stands on a very light, rigid board that rests on the bathroom scale at each end. She is 1.5m away from one side and 0.5 m from the other.
Explain how long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 425 {rm m}?
Compute the voltage between the surface and the axis of a uniformly charged infinite cylinder of radius a
A bicycle wheel of mass M (assumed to be concentrated at its rim) and radius R is mounted horizontally so it may turn without friction on a vertical axle. A dart of mass mo is thrown with velocity vo above and sticks in the tire.
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