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Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. A person is sitting at an angle off to the side of a diffraction horn that has a width D of 0.0831 m. The speed of sound is 343 m/s. This individual does not hear a sound wave that has a frequency of 10500 Hz. When she is sitting at an angle /2, there is a different frequency that she does not hear. What is it?
a 881 kg car is going 26 ms and the driver has to slam on his brakes to prevent an accident. assume that a total of
a box full of books rests on a wooden floor. the normal force the floor exerts on the box is 235 n. a you push
An AA battery is connected to a parallel-plate capacitor having 4 diameter plates spaced 3 apart. How much charge does the battery move from one plate to the other.
During 0.15 s, a wheel rotates through an angle of 2.74 rad as a point on the periphery of the wheel moves with a constant speed of 2.16 m/s
Two particles with masses m and 3m are moving toward each other along the x axis with the similar initial speeds vi. Particle m is traveling to the left, while particle 3m is traveling to the right.
A juniper-wood plank measuring 0.36 ft by 1 ft by 15 ft is totally submerged in water. What is the buoyant force acting on it
An electron has an initial velocity of 5.00 106 m/s in a uniform 9.00 105 N/C strength electric field. How long does it take the electron to come to rest
An electron in a cathode-ray tube is emitted from a hot filament at a negligible speed. , whereupon it accelerates across a potential difference of 1.00 x 106 V. Determine its final speed compared to the classical result.
a battery produces 41.9v when 7.20a is drawn from it and 48.7v when 1.90a is drawn. what is the internal resistance of
Constable Bob inspected skid marks near a traffic accident to determine the acceleration of initial velocity of lawn mower involved in the accident. Bob measured the lawn mower skid marks to be 32 m long. Witnesses said the lawn mower was skiddin..
A 191g oscillator has a speed of 96.50cm/s when its displacement is 2.70cm, What is the oscillators maximum speed
A powerful motorcycle can accelerate from rest to 25.8 m/s (58 mi/h) in only 2.90 s. How far does it travel in that time
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