Forces and Newton’s Laws of Motion Topics: • Motion and Newton’s first law • • • • • What is a force? Identifying forces Newton’s second law Free‐body diagrams Newton’s third law N t ’ thi d l Sample q p question: These ice boats sail across the ice at great speeds. What gets the boats moving in the first place? What keeps them from going even faster? Slide 4-1 What Causes Motion? In the absence of any forces acting on it‚ an object will continue moving forever.
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1a. h=-4.9t^2+450 1b. h(t)=-4.9t^2+450 (h(2)-h(0))/(2-0) ((-4.9(〖2)〗^2+450)-(-4.9(0)^2+450))/2 =(430.4-450)/2 =-19.6 ∴The average velocity for the first two seconds was 19.6 metres per second. c. i) i) = =-24.5 ∴ The average velocity from is 24.5 metres/s. ii) = -14.7 iii) = -12.25 ∴ The average velocity from is 12.25 metres/s. d) Instantaneous velocity at 1s: =-9.8 ∴ The instantaneous velocity
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Tuesday Nov. 24 Intermolecular Forces Intermolecular Forces Lab II. Goal: The central goal of this experiment is to depict the intermolecular forces of four different properties of solubility‚ evaporation‚ viscosity‚ and boiling point. The reason for achieving the goal is so we can further understand solubility‚ Evaporation‚ viscosity‚ and the boiling point of liquids. III. Experimental procedures In this Lab there were four different stations to experiment with‚ my partner and I started
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The Elvis Experiment Introduction: In this experiment we will determine how the difference in length and diameter of a blood vessel have an effect on the resistance of blood flow and how the viscosity of blood will also effect the resistance of blood flow in a blood vessel. Observation: My mom is a big Elvis fan and she always wondered how his health affected his death. Knowing that he had high cholesterol and high blood pressure I decided to do an experiment on what factors may have had an effect
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1. Gradient of a scalar field function Scalar Function: Generally‚ What Is Scalar Function? The Answer Is that a scalar function may be defined as A function of one or more variables whose range is one-dimensional‚ as compared to a vector function‚ whose range is three-dimensional (or‚ in general‚ -dimensional). Scalar Field When We Talk about Scalar Field‚ We Are Talking about the Scalar Function Being Applied to a Space (More like Euclenoid Space etc) or‚ a scalar field associates
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Chapter 1: Technical Measurement and Vector 5. Newton’s law of universal gravitation is represented by [pic] where F is the gravitational force‚ M and m are masses‚ and r is a length. Force has the SI units kg ∙ m/s2. What are the SI units of the proportionality constant G? 8. The speed of light is now defined to be 2.99 7924 58 × 108 m/s. Express the speed of light to (a) three significant figures‚ (b) five significant figures‚ and (c) seven significant figures. 15. A rectangular
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Lab 1: Alkene Addition: Bromination of (E)-stilbene I. Introduction: 1. The purpose of the experiment was to perform an electrophilic addition reaction by using pyridinium tribromide to brominate (E)-stilbene and to identify whether it formed the meso- or racemic product through melting point analysis. 2. This is the mechanism for the bromination of (E)-stilbene. However‚ this is the mechanism for Br2 and in class we us Pyridinium Tribromide instead due to the difficulties associated
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Anopheles Quadrimaculators Vectors: Organochloride DDT and Global Malaria Paper on Organochloride’s Effect on Global Malaria Dr. Stephanie P. McCallum Ed.D. Environmental Health Public Health 8165 -1
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Parallel Forces Objective: Find FA and FB on the apparatus which are parallel to both Fulcrum A and B. Calculations: Theoretical FB Στ = 0 +FB 0.5 - (0.1kg x g x 0.1m) - (0.2kg x g x 0.4m) - (0.05kg x g x 0.7m) - (0.1kg x g x 0.3m) = 0 -[{(0.1kg x 0.1m) + (0.2kg x 0.4m) + (0.05kg x 0.7m) + (0.1kg x 0.3m)}x 9.8] + 0.5FB = 0 0.5FB = [(0.1 x 0.1) + (0.2 x 0.4) + (0.05 x 0.7) + (0.1 x 0.3)]x 9.8 FB = FB = 3.04 N Experimental FB FB = mpanB g - mfulcrumB g FB = (0.385kg x 9.8)
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Old Dominion University ORGANIC 214 Alkene Addition Submitted by: Alkene addition: Bromination of (E) Stilbene Introduction: In this lab we used the greener approach‚ which involves the addition of bromine across a double bond. When bromine reacts with E-stilbene (trans-1‚2-diphenylethene)‚ two new chiral carbons are created from the sp2 carbons‚ therefore 3 different dibrominated stereoisomers are possible: meso-(1R‚2S)‚ or the raceminc mixture-(1R‚2R) or (1S‚2S)-dibromo-1‚2-diphenylethane
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