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One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 120 N. What is the radius of the brass ball?
An airplane, diving at an angle of 48º with the vertical, release a projective at an altitude of 830m. What was the vertical component of its velocity
A 220 ohm resistor, 0.400 H inductor, 6.00 microF capacitor, and voltage source of amplitude 30.0 V and angular frequency 230 rad/s are connected to form an L-R-C series circuit. What is the current amplitude
A disk of radius 215 cm rotates about its axis. Points on the disk\'s rim undergo tangential acceleration of magnitude 1.13 m/s2. At a particular time the rim has a tangential speed of 1.77 m/s. At a time 0.907 seconds later, what is the tangential s..
Unpolarized light with intensity 370 W/ m^2 passes first through a polarizing filter with its axis vertical, What light intensity emerges from the second filter
The current in an electromagnet connected to a 250 V line is 16.0 A. At what rate must cooling water pass over the coils if the water temperature is to rise by no more than 5.0 degrees Celsius?
Calculate the rate of heat conduction through house walls that are 13.0cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors.
The work function for a metal is 3.8 eV. What is the minimum photon frequency that can just eject an electron from the metal
One of the 61.0cm -long strings of an ordinary guitar is tuned to produce the note B3 (frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
Two cars, both of mass m, collide and stick together. Prior to the collision, one car had been traveling north at speed 2v, Find the speed vfinal of the joined cars after the collision
The maximum induced emf in a generator rotating at230 rpm is 40 V. How fast must the rotor of the generatorrotate if it is to generate a maximum induced emf of58 V?
A horizontal meter stick, 100 cm long, supported at the50-centimeter mark has a mass of 500 grams hanging from it at the20-centimeter mark and a 300-gram mass hanging at the 60-centimeter mark
a 92-kg fullback, running at 5.0 m/s,attempts to dive directlyacross the goal line for a touchdown. what is their velocity after the collision
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