mat-sln-asn-hwk1-spr02 - Solution for Homework 1 Electric...

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Solution for Homework 1 Electric Charge and Introduction to Devices Solution to Homework Problem 1.1(The Law of Conservation of Charge) Problem: Select the response below that most precisely states the Law of Conservation of Charge. Select One of the Following: (a) For any physical process, the total number of charges before the process is equal to the total number of charges after the process. (b-Answer) For any physical process, the total charge before the process is equal to the total charge after the process. (c) For any physical process, the total charge before the process is greater than or equal to the total charge after the process. (d) For any physical process, the total charge before the process is less than or equal to the total charge after the process. (e) For any physical process, the number of electrons does not change. Solution For any physical process, the total charge before the process is equal to the total charge after the process. Total Points for Problem: 2 Points Solution to Homework Problem 1.2(Experimental Support for: The Existance of Mul- tiple Types of Charge) Problem: Which of the following describes an experiment that demonstrates that there are at least two different types of charge? Select One of the Following: (a) Rub one pair of rods made of the same material - for example, glass - with felt. Observe that the glass rods repel one another. (b-Answer) Charge a pair each of glass and rubber rods by rubbing them with felt. Observe that that (1) the glass rods repel each other, (2) the glass rods attract the rubber rods, and (3) the rubber rods repel each other. (c) Select two pairs of different kinds of rods - for example, glass and rubber - and rub the rods with felt. Observe that all of the rods repel one another.
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