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A sound source of 500 Hz with an acoustic power of 1/10 of a watt how do you find the intensity 1/2 a m from the source, the pressure amplitude, and the magnitude of the specific acoustic impedance assuming the amplitude of the particle velocity is 0.0127 m/s.
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. Which ball hits the ground first? and why
q1. an airplane is flying horizontally with the speed of 1300kmh while an engine falls off. neglecting air resistance
A thin, horizontal copper rod is 1.10 m long and has a mass of 203 g. What is the minimum current in the rod
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. What is the total mass of the wire
A typical steel B-string in a guitar resonates in its fundamental frequency at 240 Hertz. The length of the string is 0.600 m. Find the wavelength of the third harmonic of the guitar string
a car with a mass of 2000 kg is traveling at 20 m/s. how much kenetic energy in joules does the car have? how much heat must be dissipated to stop the car
You throw a stone vertically upward with an initial speed of 5.8 from a third-story office window. If the window is 12 above the ground, find the time the stone is in flight
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, obtain the constant angular acceleration of the centrifuge
A wooden block of mass 2kg, initially stationary is dragged by a force F with magnitude 20 N along a frictionless incline with an angle 0=30 degrees, What is the wooden block acceleration
consider three identical metal spheres a b and c. sphere a carries a charge of 5q. sphere b carries a charge of -q.
A converging lens with a focal length of 6.20cm forms an image of a 3.80mm-tall real object that is to the left of the lens. Where are the object and image located
During the the a compact disc (CD) accelerates from rest to a constant rotational speed of 900 rev/min, What is the angular acceleration of the CD
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