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Two identical mandolin strings under 200 N of tension aresounding tones with frequencies of 523 Hz. The peg of onestring slips slightly, and the tension in it drops to 196 N. How many beats per second are heard?
A swimmer swims north at .35 m/s relative to still water across a river that flows at a rate of .15 m/s from west to east. Calculate the direction of swimmer's velocity relative to the riverbank
A calorimeter contains 2000 grams of water at 0oc. a jet of stream at 100oc is passed through the water. What is the temperature of the water when 100 grams of steam have condensed in it.
An object 0.480cm tall is placed 14.0cm to the left of the vertex of a concave spherical mirror having a radius of curvature of 21.0cm, Find the orientation (erect or inverted) and the nature (real or virtual) of the image
A yo-yo has a rotational inertia of 1140 g·cm2 and a mass of 81.3 g. Its axle radius is 3.27 mm, and its string is 106 cm long, What is the magnitude of its linear acceleration, rotational kinetic energy
A light bulb marked "100 W [at] 120 V" is screwed into a socket at one end of a long extension cord in which each of the two conductors has a resistance of 0.776
a railroad car o.f mass 2.25 x 10^4 kg is traveling east 5.50 m/s and collides with a railroad car of mass 3.00 x 10^4 kg traveling west 1.50 m/s, find the velocity of the railroad cars
Two electrons in an atom are separated by 1.5 × 10^?10 m, the typical size of an atom, What is the force between them
A charge +3.9 ?C is placed at the center of the hollow spherical conductor with the inner radius 3.1 cm and outer radius 5.5 cm, What is the total charge on interior and exterior surface
What is the net upward force on an airplane wing of area 26.0 m2 if the speed of air flow is 246 m/s across the top of the wing and 222 m/s across the bottom
Through what angle in degrees does a 33 rpm record turn in 0.25 s? If the diameter of the record is 12 inches, what is the speed of the outer rim of the record
A spring is attached is attached to the top of a large cylinder. what is the expression for the natural frequency of the oscillation
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.5 N-s, what is the mass of the ball
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