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Dr. Srinivasan 9/22 Notes

by: Josh Matthews

Dr. Srinivasan 9/22 Notes PHYS 133

Josh Matthews
Cal Poly
GPA 3.1
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About this Document

Notes from Day 1 about the fundamental forces and charge.
General Physics III
Dr. Prashant Srinivasan
Class Notes




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This 1 page Class Notes was uploaded by Josh Matthews on Sunday September 25, 2016. The Class Notes belongs to PHYS 133 at California Polytechnic State University San Luis Obispo taught by Dr. Prashant Srinivasan in Fall 2016. Since its upload, it has received 56 views. For similar materials see General Physics III in Physics at California Polytechnic State University San Luis Obispo.

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Date Created: 09/25/16
9/22/16 Physics 133—Dr. Srinivasan 4 Fundamental Forces: 1) Strong a. The force -15t holds the nucleus together b. Range: 10 m, the diameter of a medium sized nucleus 2) Electromagnetic 1 a. Strength: of the strong force 137 b. Fundamental property: charge c. Range: infinite d. Repulsion is the surest test for electrical interaction 3) Weak a. Occurs in neutrino interaction b. Range: 10 , 0.1% the diameter of a proton 1 -6 c. Strength: 1,000,000 (10 ) of the strong force 4) Gravity a. Strength: 6 x 10-3of the strong force b. Range: infinite Charge  A property of matter (Units−19oulomb)  It is quantized-- |e=1.6×10 C  Only two kinds of charges are known to us (positive and negative)  Electrons are the primary charge carriers o Flow of electrons makes up an electrical current  Charge can be transferred  Law of Conservation of Charge: o Charge is a conserved quantity; the amount of charge in a closed system is constant o Charge cannot be created or destroyed  Closednon-interacting  Charges interact by exerting forces on each other  Charging—generating a region of excess charge o Charging by contactconduction o Charging w/o contact (no physical transfer)induction


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