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Physics / Physics: Principles with Applications 6 / Chapter 17 / Problem 2P

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

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Problem 2P

How much work does the electric field do in moving a proton from a point with a potential of +125 V to a point where it is −55 V? Express your answer both in joules and electron volts.

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QUESTION:

Problem 2P

How much work does the electric field do in moving a proton from a point with a potential of +125 V to a point where it is −55 V? Express your answer both in joules and electron volts.

ANSWER:

Step-by-step solutionGiven: Distance ( d Vaccum) = 1.0 m Refractive index of glass =n glass1.52 Refractive index of water =n = 1.0 water Refractive index of vacuum =n vaccum 1.33 Refractive index of diamond =n diamond 2.42 Speed of light in air=3.0 x 10 m/s 8Calculate: Distance travelled in,vacuum,water,glass, diamond =Step 1 of 5 Time take by light to travel is given by tglass d Vaccum c = 1m /3.0 x 10 m/s8 conversion ( 1 second = 10 nano 9second) = 0.333 x 10 -8 (reciprocal ) = 3.33ns Hence the time taken by light to travel = 3.33ns

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