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Q. Two loudspeakers are placed next to each other and driven by the same source at a frequency of 570Hz. A listener is in front of the speakers and on the line separating them, thus creating a constructive interference. What distance would one speakers be moved back away from the listener to make destructive interference at the listener's ear? (Speed of sound = 340m/s)
Four identical charges, +Q, occupy the corners of a square with sides of length a. A fifth charge, q, can be placed at any desired location. Find the loction of the fifth charge, and value of q, such that the net electric force acting on each of t..
A rifle with a barrel length of 56 cm fires a 14 g bullet with a horizontal speed of 350 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 13 cm.
Two forces are acting on an object: 8 N [N22.1 ºE], and 5 N [S 34.8 ºE]. What is the magnitude (in N) of the resultant force acting on the object.
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for 472.9 and 696.0 in the visible spectrum. What is the minimum thickness of the film.
A 280 block on a 58 long string swings in a circle on a horizontal, frictionless table at 90.0 . What is the speed of the block.
Neglect friction, what steady force, applied at its outer edge and perpendicular to plane of the door, can move it from rest through an angle of 90° in 30 s.
Two particles moving under the influence of their mutual gravitational force describe circular orbits about one another with a period T. If they are suddenly stopped in their orbits and allowed to gravitate towards each other, show that they would..
Calculate the number of bright fringes per centimeter. At what two locations on x-axis (xpositive, xnegative) is the potential zero.
A coffee filter of mass 1.4 grams dropped from a height of 2 m reaches the ground with a velocity of 0.6 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
Assume someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree.
Calculate the radius of the path, direction of the force experienced by the electron and the path of the electron through the magnetic field.
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