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One string of a certain musical instrument is 80.0cm long and has a mass of 8.72 g. It is being played in a room where the speed of sound is 344m/s To what tension must you adjust the string so that, when vibrating in its second overtone, it produces sound of wavelength 0.768m ? (Assume that the breaking stress of the wire is very large and isn't exceeded.). What frequency sound does this string produce in its fundamental mode of vibration?
An electric motor is rated to have a maximum power output of 0.68 hp. how fast (i.e., at what speed) can it lift the crate
A 100 kg sphere and a 100 g sphere outside it are held fixed with the distance between their centers equal to 0.5 m, What are the magnitude and direction of the force on each of the spheres
Two people carry a heavy electric motor by placing it on a light board 2.70m long. One person lifts at one end with a force of 380N, Where is its center of gravity located
A frictionless plane is 11.5m long and inclined at 32.7 degrees. A sled starts at the bottom with an initial speed of 6.05 m/s up the incline. Find the initial speed of the second sled
The earth's atmosphere pushes down on the surface of the earth with a force of 14.7 lb for each square inch of the earth's surface. What is the total weight of the earth's atmosphere
Positive point charges q and 2q are located at x = 0 and x = 3d, respectively. What is the electric field at x = d (point P)? (Use any variable or symbol stated above along with the following as necessary: k for Coulomb constant.) magnitude E = di..
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge
A 5 g bullet has a speed of 220 m/s and embeds itself into a 650 g block. What is the speed of the block after the collision
An uncharged 4.70*10^-6 F capacitor and an 8.00 *10^5 Omega resistor are placed in series with a 12.0 V battery. find the Maximum Current through the curcuit after the switch is closed
Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28.0m/s, what is the minimum distance necessary to stop car.
A force of 45 N acts on a ball for 0.2 sec If the ball is initially at rest, What is the final momentum of the ball
A scuba diver is 32 m below the surface of a lake, where the temperature is 5°C. What is the volume of the bubble right before it breaks the surface
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