review3

# review3 - The electric company bills you in “kilowatt...

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Review for Test #3 Responsible for: - Chapter 7 (7-3, 7-4), 8 (except 8-5), 9 (except 9-8), 10 (10-1 to 10-4); also chapters 1-7, 12 - Notes from class - Problems worked in class - Homework assignments Test format: - 18 problems (5 points each)** - multiple-choice, some T/F, 2 bonus probs. - Time: 75 minutes Test materials: - Pencil, eraser, and calculator - No formulae sheet or paper, Closed textbook/notes - Student ID

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Material Covered Chapter 7: Work and Power - work done by a variable force, spring potential energy - power Chapters 8: Conservation of Energy - Conservative and nonconservative forces - Gravitational potential energy - Conservation of Mechanical Energy - work due to nonconservative forces Chapter 9: Impulse and Momentum - Impulse, linear momentum - Impulse-momentum theorem - Conservation of Linear momentum - 1 and 2D collisions (elastic/inelastic) - Center of mass, Velocity of the center of mass
Example Problem

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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 lowest-energy orbit the distance from the proton to the electron is 0.529x10-11 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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review3 - The electric company bills you in “kilowatt...

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