Fa08_7C_6

Fa08_7C_6 - Quiz 5 Reminder: Emilys Office Hours next week...

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1 Quiz 5 Reminder: Emily’s Office Hours next week are different: Wednesday 11/12 from 1-2pm in TB114 Monday 11/10 OH are cancelled
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Physics 7C Fall 2008 Lecture 6: Field model If time permits, begin Electric Potential Energy & Electric Potential Dipole field
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3 Tesla Coil Powered by electricity Observe the top--what do you see? Observe as a fluorescent lamp is brought near--what do you see? Image: http://tommcmahon.typepad.com/photos/uncategorized/2007/08/16/teslacoil2.jpg Takeaway message: the device is generating something electrical throughout space in the vicinity of the coil.
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4 Field Model: What is a field? …some physical quantity that has a value “everywhere,” that can either change from location to location or stay the same. -Physics 7C Course Notes In physics, a “field” refers to a quantity that has a value for every point in space.” -homework from DLM 10 Is temperature a field?
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5 Temperature Field What do places with the same color have in common?
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6 True or False Gravity is more on Earth than the moon.
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7 True or False Gravity is more for a feather on Earth than for an elephant on the moon. QuickTimeª and a TIFF (Uncompressed) decompressor are needed to see this picture. QuickTimeª and a TIFF (Uncompressed) decompressor are needed to see this picture.
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8 Field Model: Gravitation A source mass m 1 creates a gravitational field in a direction toward the source mass with a value g=Gm 1 /r 2 The net Gravitational Field is the sum of all the source fields. A test mass m 2 , placed in a gravitational field, experiences a gravitational force Magnitude given by F=m 2 g Direction of force: Attractive
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9 Electric Phenomenon Like gravitational force, the electrical interaction between objects acts at a distance. Electrical interaction depends on charges
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10 New Models: Electric Field and Forces Field, Forces, Potential Energy, and Potential Magnetic Field and Forces
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11 Applying Field Model to Electrical Phenomena A charge Q generates an Electric Field E Q Charge q, placed in an electric field E Q , experiences a force F elec Q on q =q E Q .
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This note was uploaded on 05/30/2009 for the course PHY 7C taught by Professor Mahmud during the Fall '08 term at UC Davis.

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Fa08_7C_6 - Quiz 5 Reminder: Emilys Office Hours next week...

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