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Unformatted text preview: , The electric company bills you in “kilowatt hours”, abbreviated kWh. a) Is this energy, power, or force? b) Monthly electric use of a typical household is 500 kWh. What is this in basic SI units? c) What is the average power usage? Chapter 10: Rotational Kinematics arc length; angular displacement, velocity, and acceleration  rotational kinematic equations  tangential velocity, tangential acceleration  rolling motion Example Problem 10.44 , The Bohr model of the hydrogen atom pictures the electron as a tiny particle moving in a circular orbit about a stationary proton. In the lowestenergy orbit the distance from the proton to the electron is 0.529x1011 m, and the linear speed of the electron is 2.18x10 6 m/s. (a) What is the angular speed of the electron? (b) How many orbits about the proton does it make each second? (c) What is the electron’s centripetal acceleration? (d) Where is the center of mass?...
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 Fall '11
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 Energy, Force, Mass, Potential Energy, Work, Fundamental physics concepts

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