homework 1

# homework 1 - Nguyen (kqn58) HW #1 Antoniewicz (56490) 1...

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Unformatted text preview: Nguyen (kqn58) HW #1 Antoniewicz (56490) 1 This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A particle of mass 25 g and charge 36 C is released from rest when it is 43 cm from a second particle of charge- 26 C. Determine the magnitude of the initial ac- celeration of the 25 g particle. Answer in units of m / s 2 . 002 10.0 points Two small silver spheres, each with a mass of 106 g, are separated by 1 . 01 m. The num- ber of electrons per atom of silver is 47, and the number of atoms per gram is Avogadros number divided by the molar mass of silver, 107 . 87 g / mol. Calculate the fraction of the electrons in one sphere that must be transferred to the other in order to produce an attrac- tive force of 10000 N (about a ton) be- tween the spheres. The Coulomb constant is 8 . 98755 10 9 N m 2 / C 2 and the Avogadros number is 6 . 02214 10 23 mol 1 . 003 10.0 points If the magnitude of an electric field is as great as 3 10 6 N / C, the air becomes ion- ized and begins to conduct electricity. This phenomenon is called dielectric breakdown. A charge of 18 C is to be placed on a con- ducting sphere. What is the minimum radius of a sphere that can hold this charge without break- down? The Coulomb constant is 8 . 99 10 9 N m 2 / C 2 . Answer in units of cm. 004 10.0 points L . x y + + + + + + + + + + + +------ P . x y ++++ ++++ S . x y +++++ +++++ + + + + +----- M . x y---- ++++ G . x y + + + +---- For which configuration(s) does the total electric field vector at the origin have non- zero components in the x direction as well as the y direction ( i.e. , both x and y components are non-zero)? 1. Configurations P and L only 2. Configuration M only Nguyen (kqn58) HW #1 Antoniewicz (56490) 2 3. Configurations G and P only 4. Configuration G only 5. Configurations G and L only 6. Configuration P only 7. Configuration S only 8. Configurations G , P and L only 9. Configurations P , S and L only 10. Configurations G , M and L only 005 (part 1 of 6) 2.0 points Consider this particular situation, which is spherically symmetric.spherically symmetric....
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## This note was uploaded on 09/10/2010 for the course PHYS 302L taught by Professor Antoinez during the Fall '10 term at UT Arlington.

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homework 1 - Nguyen (kqn58) HW #1 Antoniewicz (56490) 1...

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