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Two stereo speakers mounted 52 m apart on a wall emit identical in -phase sound waves. You are standing at the opposite wall of the room at a point directly between the two speakers. You walk 2.11 m parallel to the wall, to a location where you first notice that the sound intensity drops to zero. If the wall along which you are walking is 10.7 m from the wall with the speakers, what is the wavelength of the sound waves?
A block with mass m = 1.8-kg attached to the end of a spring undergoes simple harmonic motion on a horizontal frictionless surface. The oscillation period is T = 5.0-s and the oscillation amplitude is A = 12.7-cm. When the spring is unstretched the b..
A car is moving along a horizontal road at 15 m/s. The car skids to a stop in 4 seconds. What is the coefficient of static friction
Two point charges of equal magnitude are 6.1 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 37 N/C
In reaching her destination, a backpackerwalks with an average velocoity of 1.34 m/s. How far east did she walk
the milky way galaxy is traveling at 190 kmsec. how many years will it take for it to crash into another planet that is
An astronaut construct a pendulum with a length of 1 m on a new planet. If the period is 3.5 s, determine what is the acceleration due to gravity
lake erie contains roughly 4.00 x 1011 m3 of water.a how much energy is required to raise the temperature of that
Suppose that after a centrifuge in a medical laboratory is turned off it continues to rotate with a constant angular deceleration for 15.5 s before coming to rest. If its initial angular speed was 3410 rpm, what is the magnitude of its angular dece..
A mass spring system had k= 55.6 N/m and m=0.41 kg. Find the frequency of its simple harmonic motion
A 1.69 kg mass stretches a vertical spring 0.317 m. If the spring is stretched anadditional 0.135 m and released, how longdoes it take to reach the (new) equilibrium position again?
A 22 kg brick is completely submerged insaltwater and displaces an amount of saltwater weighing 11.7 N. Determine the buoyant force on the brick
calculate the angular magnification of the telescope
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