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Point A is the midpoint of one of the sides of a square. On the side opposite this spot, two in-phase loudspeakers are located at adjacent corners, as in Figure 27.39. Standing at point A you hear a loud sound because of constructive interference among the identical sound waves coming from the speakers. As you walk along the side of the square toward either empty corner, the loudness diminishes slowly to nothing and then increases again until you hear a maximally loud sound at the corner. If the length of all side of the square is 2.9 m, discover the wavelength of the sound waves.
A 0.9 inch tall clock is 24 cm in front of a diverging lens which has a focal length of -33.5 cm. Paying attention to sign, answer the following questions. a. What is the image distance? cm b. What is the image's height?
A 100 N force has a horizontal component of 60 N and a vertical component of 80 N. What is the cart's final velocity
A molecule of DNA (deoxyribonucleic acid) is 2.05 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.88% upon becoming charged. Determine th..
What is an angular acceleration
an electron and a proton are initially very far apart effectively an infinite distance apart. they are then brought
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, 12m above the moat. How far from the castle wall does the launched roch hit the ground
Suppose in the drawing that I1 =I2 = 23.6 A and that the separation between thewires is 0.0467 m. By applying an external magnetic field (createdby a source other than the wires) it is possible to cancel themutual repulsion of the wires. This exte..
An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talons wiggles loose and falls into the lake 5.00 m, Calculate the velocity of the fish relative to the water when it hits the water
Consider a container insulated from the environment and divided into two sections by a very thin, stiff membrane, In which direction heat energy is transferred
A uniform disk with mass 39.5kg and radius 0.250 m is pivoted at its center about a horizontal, frictionless axle that is stationary. What is the magnitude a of the resultant acceleration of a point on the rim of the disk
A guy looks into one side of a hubcap, he sees an inmageof his face 30.0 cm in back of it. what is the radius of curvature of the hubcap
a dart gun suspended by strings hangs in equilibrium. the mass of the gun is 355 grams not including a dart. the gun
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