Experiment #2 Resonance of Air Columns Connie Wang PHYS 2426 – 103 Partners: Deneen Ernst‚ Dalton Penn‚ and Trey Thompson DATA__________________________________________________________________________________________ Room Temperature: 21°C Theoretical speed of sound: 343 m/s Experimental speed of sound (average): 348 m/s Percent Difference: + 1.46% Frequency of Tuning Fork (Hz) | First Position of Resonance | Second Position of Resonance | Wavelength (m) |
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HYPOTHESIS TESTING WHAT IS THIS HYPOTHESIS???? • In simple words it means a mere assumption or supposition to be proved of disproved. • But‚ for a researcher it is a formal question that he intends to resolve. • Example: I assume that 1) under stress and anxiety a person goes into depression. 2) It leads to aggressive behaviour. Eg. : Students who get better counselling in a university will show a greater increase in creativity than students who were not counselled. • So‚ the hypothesis
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Chapter-11 Testing of Hypothesis: (Non-parametric Tests) Chapter-11: Testing of Hypothesis - (Non-parametric Tests) 2 11.1. Chi - square ( χ )Test / Distribution 2 11.1.1. Meaning of Chi - square ( χ )Test 2 11.1.2. Characteristics of Chi - square ( χ )Test 2 11.2. Types of Chi - square ( χ )Test / Distribution 2 11.2.1. Chi - square ( χ )Test for Population Variance 2 11.2.2. Chi - square ( χ )Test for Goodness-of-Fit 2 11.2.3. Chi - square ( χ )Test or Independence
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INTRODUCTION TO ECONOMICS Exercise 1 1. What determines that a resource be scarce? Why is scarcity important in defining Economics as a science Resources are seen as being scarce‚ when the wants exceed the resources. The fundamental problem of economics relates to the choices made in the face of limited resources and unlimited wants. 2. Read your local newspaper and economic magazines. Explain the difference between Microeconomics and Macroeconomics. From your research‚ give three examples
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Fortran Exercise #2: Coefficient Of Restitution 1. DEFINITION In this lab‚ we shall be studying the coefficient of restitution of a superball. The coefficient of restitution‚ COR‚ is the ratio of the bounce-back velocity to the original velocity of an object undergoing impact (such as a ball impacting the ground after being dropped from an initial height). Using the principle of the conservation of energy‚ the COR can be used to relate the bounce-back height to the original height of a ball dropped
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Exercise 2 Worksheet: Explain Classroom Interactivity Save this worksheet to your computer with the filename "Your_Name_Exercise_2." Complete the table below by doing the following: Fill in the table by adding your answer to each question. Submit the completed worksheet as an attachment via the Assignment tab. Question about Classroom Interactivity Your Answers Why is it important for you to check your Gmail® account regularly as a student? Because that’s where I receive school updates and
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Exercise 1.1.9 Exercise 1.1.10 Exercise 1.1.11 Exercise 1.1.12 Lab 1.1 Review: 1. 127 to binary 2. Equivalent because the 0’s are just placeholders. 10 = 0010 3. First 4 digits of a Base 5 numbering system would be (left to right) 625 125 25 5 4. The leading Zeros would make it difficult to build a decimal to binary conversion table in excel. Excel doesn’t see numbers with leading 0s as real numbers. Exercise 1.2.1 110 and 1001 = 1111 Exercise 1.2.2 110 and 101 = 1011 Exercise 1.2.3
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Name _________________________________________ Date _________________ Anthropology 301 Self-Paced Lab 1: Introduction to the Primates 1. Which of these items or features might be studied by a physical anthropologist? a. A ceramic pot from an early civilization. b. The ruins of an ancient Mayan temple. c. The fossilized skeleton of an early primate. d. Religious rituals in a variety of different cultures. 2. Paleoanthropology is ________. a. the biology of human growth patterns b. the study of evolutionary
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Hypothesis testing I Kevin Soo Outline • • • • Theory and the research process What is a hypothesis? Hypothesis testing Statistical models Theory and the research process Theory • A belief – Can be true or false – P (belief) • A proposed/possible explanation for something – ‘Some students do poorly at statistics because they have less exposure to mathematics’ – ‘Women don’t date me because I’m ugly’ – ‘Manchester United lost the Premier League because they struggled with injury
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Length on Contraction 1. As muscle fiber length increases contraction force increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: increases. Materials and Methods Measurement of Threshold Stimulus 1. Dependent Variable contraction force 2. Independent Variable stimulation voltage 3. Controlled Variables muscle fiber length; frequency of stimulation; temperature Effect of Muscle Length on Contraction 1. Dependent Variable
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