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The G string on a violin has a fundamental frequency of 196 Hz. It is 31.0 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 3.50 Hz is heard between the two strings. When this occurs, what is the effective length of her string?
A typical adult ear has a surface area of 1.56 Ã- 10-3 m2. The sound intensity during a normal conversation is about 3.94 Ã- 10-6 W/m2 at the listener's ear. How much power is intercepted by the ear
Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by cables at each end to paint the second floor. find the force that the left cable exerts on the board
A thin nonconducting spherical shell of radius 6 cm carries a uniform surface charge density ? = 9 nC/m2. What is the total charge on the shell
A thin, flat, uniform disk has mass M and radius R. Find the moment of inertia of the disk with the hole about an axis through the original center of the disk, perpendicular to the plane of the disk
An electric motor rotating a workshop grinding wheel at a rate of 1.01 102 rev/min is switched off. How long does it take for the grinding wheel to stop
An archer pulls her bowstring back 0.360 m by exerting a force that increases uniformly from zero to 230 N. What is the equivalent spring constant of the bow? (N/m) How much work does the archer do in pulling the bow? (J)
A soccer player kicks the ball toward a goal that is 23.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
A 25-? resistance is connected in series with a 30-mH inductance and a 12-µF capacitor, obtain the power dissipated in the circuit
An object is placed 13.1 cm to the left of a diverging lens of focal length -6.04 cm. Find the distance d that places the final image at infinity
An 9.00 point mass and a 14.0 point mass are held in place 50.0 apart. Find the magnitude of the acceleration of the particle and direction
A thin 1.7-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
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