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The middle C string on a piano is under a tension of 882 N. The period and wavelength of a wave on this string are 3.82 10-3 s and 1.26 m, respectively. Find the linear density of the string.
A wave traveling along the x axis is described mathematically by the equation y = 0.18 sin (8.4%u03C0t - 0.57%u03C0x), where y is the displacement (in meters), t is in seconds, andx is in meters. What is the speed of the wave?
Two identical point charges (q = +6.90 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.45m. A test charge (q0 = -3.20 x 10-8 C), with a mass of 5.20 x 10-8 kg, is released from rest at one of the corners of the s..
A string under a tension of 58.5 N is used to whirl a rock in a horizontal circle of radius 2.75 m at a speed of 20.5 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
orville walks 318 m due east. He then continues walking along the straight line, but in a different direction, and stops 164 m northeast of his starting point. How far did he walk during the second portion of trip and in what direction.
What is the maximum speed of the car (in km/hr) in the similar turn in the rain, when the coefficient of static friction is reduced to 0.720.
A circular wire loop of radius 19.1 cm carries a current of 3.62 A. What is the magnitude of the torque acting on the loop
The angular momentum of a flywheel having a rotational inertia of 0.250 kg·m2 about its central axis decreases from 2.80 to 1.800 kg·m2/s in 1.00 s. What is the average power of the flywheel
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to five times the Earth's radius before coming to rest momentarily
A photon with an initial wavelength of 1.150×10-11 m Compton scatters from an electron which is initially at rest. What is the kinetic energy of the scattered electron
Approximation the force a person should exert on a string attached to a 0.130 kg ball to make the ball revolve in a horizontal circle of radius 0.600 m.
A railroad car of mass 4.0 * 10^4 kg moving at 5.0 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.50 m/s.
In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. compute the average velocity between t=0 and t=7.5 minutes.
In an emergency situation, a person with a broken forearm ties a strap from his hand to clip on his shoulder. find the tension in the strap
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