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The G string on a violin has a fundamental frequency of 196 Hz. It is 29.0 cm long and has a mass of 0.500 g. While this string is sounding, a nearby violinist effectively shortens the G string on her identical violin (by sliding her finger down the sting) until a beat frequency of 4.00 Hz is heard between the two strings. When this occurs, what is the effective length of her string? cm
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air. What is the intensity of the sound at the other end of the tube
Three point charges are located near a spherical Gaussian surface of radius R = 6 cm. What is the electric flux through this surface
If you have a thin spherical shell with radius b and electric potential v0 located outside a concentric spherical shell of radius a that is grounded with potential v1=0, what is the electric potential V(r,theta) everywhere
A rifle is aimed horizontally at a target 51m away. The bullet hits the target 2.0cm below the aim point. What was the bullet's speed as it left the barrel
The trainer releases the ball at the horizontal distance of 4.72m away and the vertical distance of 4.61m above the water. At what height does the dolphin catch the ball
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
7.4 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.365. find the magnitude of the external force acting on the crate
Reading glasses of what power are needed for a person whose near point is 110cm, so that he can read a computer screen at 52cm? suppose a lens-eye distance of 2cm.
A starcruiser, measured by its passengers to be 80.0m long, whizzes by an Earthling at speed 0.992c. What length does the Earthling measure the ship's length to be
Two children, with masses 31 kg (on the left) and 45 kg (on the right), sit at opposite ends of a 3.2 m long seesaw with mass 23 kg, find the net torque on the seesaw
Two objects (01 and 02) have equal ammounts of electric charge Q on each of them. each object is located in the same electric field, the electric , the electric field having a magnitude of e.
A gun shoots small plastic balls. The ball falls 1.2 m while traveling horizontally 5.1 m. Calculate the speed the ball leaves the gun
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