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Question: The planetary model of the atom pictures electrons orbiting the atomic nucleus much as planets orbit the Sun. In this model, you can view hydrogen, the simplest atom, as having a single electron in a circular orbit 1.06Ã-10âˆ'10 m in diameter. (a) If the average speed of the electron in this orbit is known to be 2.20Ã-106 m/s , calculate the number of revolutions per second it makes about the nucleus. (b) What is the electron's average velocity?
Two small no conducting spheres have a total positive charge of 108.4 uC. Determine the charge on the spheres
In a certain chemical process, a lab technician supplies 231J of heat to a system. What is the increase in the internal energy of the system
A satellite with a mass of 310 kg moves in a circular orbit 3.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
A pulley system is utilized to lift a 52kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Suppose the masses of the chains, pulleys, and ropes are negligible.
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
two point charges are seperated by a distance r and they repel each other with a force f. if their seperation is
a 520 N physics student stands on a bathroom scale in an 850 kg(including student) elevator that is supported by a cable. find the acclereration of the elevator
three charges each of magnitude 8 nc are at separate corners of a square of edge length 4 cm. the two charges at
Edgar A. Poe 's "The Purloined Letter" set the story in Paris and is mostly related in a series of conversations.
Suppose a particle with mass m is released from rest in a uniform gravity g, write down the relativistic equation of motion and find an expression that gives the relationship between velocity and time
The giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Find the time of one revolution of the swing if the rod supporting the seat makes an angle of 30 degrees with the vert..
Find the magnitude of the resultant force and the angle it makes with the positive x-axis. (Let a = 100 N and b = 500 N. Round your answers to one decimal.
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