## Phy 101 Assignment 2 Solution Equation

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### Exam Info

Test 1 Wednesday, Feb 8th 7pm, G20 MING HSIEH

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Test 1 (blank)

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Test 2 Wednesday, Mar 15th 7pm, G20 MING HSIEH

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Solution/Key for Test 2Note! If you took a makeup test, the answers are in a different order (different letter choice), but the numerical answer is the same.

Test 3 Wednesday, Apr 12th 7pm, G20 MING HSIEH

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Final Exam May 4th, 8pm-11pm, Room B51 White Hall (normal classroom)

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### Lecture Presentations

Introduction 1-9

Chapter 1 1-11

Chapter 2A 1-13

Chapter 2A part 2 1-18

Chapter 2B 1-20

Chapter 2C 1-23

Chapter 2 Problem Solving Day 1-25

Chapter 3A 1-27

Chapter 3B 1-30

Chapter 3 Problem Solving Day 2-1

Chapter 4A 2-3

Chapter 4B 2-6

Test 1 Review 2-8

Chapter 4 Problem Solving Day 2-10

Chapter 4D 2-13

Chapter 5A 2-15

Chapter 5B 2-17

Chapter 6A 2-20

Chapter 6B 2-22

Chapter 4-5 Problems 2-24

Chapter 6C 2-27

Chapter 6 Problem Solving Day 3-1

Chapter 7A 3-3

Chapter 7B 3-13

Test 2 Review 3-15

Chapter 7C Problems 3-17

Chapter 8A 3-20

Chapter 8B 3-22

Chapter 8C Problems 3-24

Chapter 9A 3-27

Chapter 9B 3-29

Chapter 9C 3-31

Chapter 10A 4-3

Chapter 9&10 Problems 4-5

Chapter 11A 4-7

Chapter 13A 4-10

Test 3 Review 4-12

Chapter 13B 4-17

Chapter 13C 4-19

Chapter 13D Problems 4-21

Chapter 14A 4-24

Final Review 1 4-26

Final Review 2 4-28

Vibrations and Waves MP205, Assignment 8 Solutions1. Satisfy yourself that the following equations can all be used to describe thesame progressive wave asy=Asin(2πλ(x-vt))(a)y=Asin (2π(kx-νt))[10](b)y=Asin(2π±xλ-tT²)[10](c)y=-Asin(ω(t-xv))[10](d)y=AIm{exp[i2π(kx-)]}[10]y=Asin(2πλ(x-vt))This is our base equation, and we need to rewrite the following equations as this equation.(a)y=Asin 2π(kx-)y=Asin (2π(kx-))Using the identites:k=1λν=vλwe can rewrite our equation as:y=Asin (2π(kx-))=Asin³2π³³1λ´x-µvλ¶t´´=Asin³2πλ(x-vt)´= (a)(b)y=Asin 2π[xλ-(t/T)]y=Asin 2π[xλ-(t/T)]Using the identity:T=1νwe can rewrite our equation as:y=Asin 2π[(x/λ)-(t/T)]=Asin 2π[xλ-t1ν!]=Asin 2π[xλ-tν]=Asin³2πλ(x-vt)´= (a)(c)y=-Asinω(t-x/v)y=-Asinω(t-x/v)Using the identity:-sin(x) = sin(-x)ω=2πT= 2πν= 2πvλ

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