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Consider a solid sphere with radius a, and positive charges are uniformly distributed inside the sphere (total energy is +q). Now place a single particle (electron) with charge -q inside the sphere, but not at the center. Derive the equation of motion for the electron, and discover the frequency of the oscillation.
A 230-µF capacitor and a 40m H inductor are in series with a 345 O resistor. What is the impedance at the resonant frequency
In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. What is the longest wavelength of light that can knock electrons out of this metal
A movie camera with a (single) lens of focal length 90 mm takes a picture of a person standing 21 m away. If the person is 180 cm tall, what is the height of the image in millimeters
An object is fired at 30.0 m/s at an angle of 35.0 degrees from a vertical cliff that is h meters (where h is unknown quantity) above the sea. calculate the velocity vector of the object
Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity.
Needing help, secretary of the United States Department of Agriculture asked your teacher, "If a chicken and a half can lay an egg and a half in a day and a half, how many days will it takes three chickens to lay twenty eggs".
question1a student has two ramps both of that are at an angle 25deg. ramp 1 is frictionless and ramp 2 has friction.
A stone is thrown upwards with an initial velocity of 60 km/h. Calculate the maxiumum height from the ground
Two small, positively charged spheres have a combined charge of 5.43×10-5 C. If each sphere is repelled from the other with an electrostatic force of 1.00 N when the spheres are 2.07 m apart, what is the charge on the sphere with the smaller charge?
During a wicked thunderstorm, Sam sees two bolts of lightning simultaneously strike two points 5.66 m apart. how far apart do the two lightning bolts strike
The work function for Tin is 4.42 eV. Ultraviolet light with \lambda =50 nm is shone upon a Tin electrode
The latent heat of vaporization of H2O at body temperature (37.0°C) is 2.45E+6 J/kg. how many kilograms of water in the form of sweat have to be evaporated
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