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Importance of Wearing Seatbelts

This Essay is after watching the video and reading 4 articles plus chapter3 we need to define momentum and inertia and explains the importance of wearing seat belts while riding in an automobile. The video was about what happens to a person when he/she is in a situation in a car accident, what will happen to the passenger and the other people in the back seat? What will happen to the car after the crash? Will the people survive or die? There are many questions to answer in this essay. Body of Essay: The force on an object is equal to mass divided by velocity. In the video we saw how the car gets into a wall without paying attention,…

Mass of Leaf

I propose that the total mass of all leaves that fall off of trees within the United States during a typical fall is 750 billion pounds. In order to answer this question, I considered the trees by my own house. The tree in my backyard is a large oak tree. Rather than attempt to approximate the number of leaves on the tree and the mass of one leaf, I considered how much a 13 gallon bag weighs when it is filled with leaves that have fallen off the tree. After raking the leaves, I do my best to fit as many leaves as possible into the bag, which means the leaves often crumble as I keep putting in more and…

Customer Review

1. Describe the Michelson Morley experiment and discuss the importance of its negative result. 2. Calculate the fringe shift in Michelson-Morley experiment. Given that: [pic], [pic], [pic], and [pic]. 3. State the fundamental postulates of Einstein special theory of relativity and deduce from them the Lorentz Transformation Equations . 4. Explain relativistic length contraction and time dilation in special theory of relativity? What are proper length and proper time interval? 5. A rod has length 100 cm. When the rod is in a satellite moving with velocity 0.9 c relative to the laboratory, what is the length of the rod as measured by an observer (i) in the satellite, and (ii) in the laboratory?. 6. A clock keeps correct time….

Osmosis Lab

Purpose: The purpose of this lab is to investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water, then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration, which in this case is the potato. This solution is a hypotonic solution which is exactly opposite as a hypertonic because the outside of the cell has a higher concentration of water than the inside, and so the water on the outside goes inside the cell. As the water moves inside of…

Simple Harmonic Motion

Abstract Through examining the simple harmonic motion of a mass hanging on a spring, three investigations were conducted in the experiment. The experiments include the relation between the period in oscillations and mass, and figuring out if the period vs. mass graph should go through the origin and lastly, finding the mass needed to create a one second timer. It was investigated by placing a motion detector under a spring that was attached to a clamp which was attached to a retort stand. The mass was pushed above its equilibrium and the position vs. time graph was recorded. It was found that it was related by P(s) = 0.04m^0.5, it would take 625 g to make it a 1s timer…

The Causes of Tardiness Among Freshmen Students

Current is the rate of flow of electrical charge. One of the undefined qualities of physics, it measures the separation of two points. Dependent Variable When two variables are related, we say that one depends on the other. This variable is called the dependent variable. The”other” variable is free to roam so it is called the independent variable. In a scientific experiment, the experimenter chooses values for the independent variable, runs the experiment, and measures the dependent variable. Ordered pairs of choosen and measured values (independent and dependent) are often plotted on a two dimensional graph for visualization. The dependent variable is traditionally plotted on the vertical axis. The energy of an object increases when work is done on it….

Mass of Leaf

I propose that the total mass of all leaves that fall off of trees within the United States during a typical fall is 750 billion pounds. In order to answer this question, I considered the trees by my own house. The tree in my backyard is a large oak tree. Rather than attempt to approximate the number of leaves on the tree and the mass of one leaf, I considered how much a 13 gallon bag weighs when it is filled with leaves that have fallen off the tree. After raking the leaves, I do my best to fit as many leaves as possible into the bag, which means the leaves often crumble as I keep putting in more and…

National Cranberry Cooperative (Abridged)

On February 14, 1981, Hugo Schaeffer, vice president of operations at the National Cranberry Cooperative (NCC), called his assistant, Mel O’Brien, into his office and said: Mel, I spent all day yesterday reviewing last fall’s process fruit operations at receiving plant #1 [RP1] with Will Walliston, the superintendent, and talking with the co-op members [growers] in that area. It’s obvious to me that we haven’t solved our problems at that plant, yet. Even though we spent $100,000 last winter for a fifth Kiwanee dumper at RP1, our overtime costs were still out of control this fall, and the growers are still upset that their trucks and drivers had to spend so much time waiting to unload process fruit into the…

Soccer Ball Lab

I. INTRODUCTION Speed, distance, time, and acceleration are all very complex formulas that are interdependent. These formulas are measured in motion data and used to determine the final instantaneous speed, distance, time, and acceleration. Distance and time are two formulas that are used to determine speed and time. For example, distance equals speed multiplied with time given, time equals distance divided by speed, and speed is equals distance divided time. Speed and time are required to determine acceleration. ( This is how they are an interdependent formula.) These complex formulas will benefit you in situations , where as you are trying to find the missing equation value dealing with motion data. For example, in many situations, the problem gives information…

Rocket Motion

Motion of the rocket is simulated using two numerical analysis methods. From the simulation different parameters such as altitude, velocity, acceleration and range for initial fuel flows were calculated. Two numerical methods, Euler’s integration and 4th order Runge-Kutta integration are used for calculating different parameters for the vertically launched rocket. The efficiency and the accuracy of the methods were compared. It was found out that the 4th order Runge-Kutta is more efficient than Euler’s integration method for the given time step. Also for the rocket given the optimal initial fuel mass flow rate for attaining the highest altitude is found to be 35.5 Kg/S which gives an altitude of 1362594 m. 1.0 INTRODUCTION Rockets are important part of space travelling….

Helicopter Experiment

Prediction: As the mass on the helicopter’s copters increases, the speed taken for the rotors to spin down faster, this is because there will be more downward pull from gravity, as the terminal velocity for a paper helicopter is low. Variables: Independent variable will be the mass that we change throughout the experiment. The dependant variable will be the time that we measure for the helicopter to reach the floor. Finally the controlled variables include, the helicopter itself. As well as the height from which the helicopter is released. Apparatus: Paper, Scotch tape, Scissors, Ruler Method: Create a helicopters rotors using take and paper use the diagram to help you Apparatus: 2 meter rulers, one stop watch, one balance, 3…

Torque: Second Condition of Equilibrium

A torque is an influence, which tends to change the rotational motion of an object. One way to quantify a torque is force applied times the lever arm. In this experiment we consider the systems in equilibrium and its applications and how the forces acting on the system affect torque. To serve as a guide there are objectives set in performing this experiment. First objective is by the second condition applied to the systems of equilibrium and the second objective is to ponder second condition of equilibrium’s use and importance. MATERIALS AND METHODS Setting up the apparatus given with the following materials: Phywe model balance, Pasco Scientific Mass and Hanger Set (ME-8967 & ME-9348), Meterstick, Protactor, Weight Pans and Spring…

Global Logistics Management

Suppose that a manufacturer of men’s shirts can produce a dress shirt in its Houston, Texas plant for $8 per shirt (including the cost of raw materials). Chicago is a major market for 100,000 shirts per year. The shirt is priced at $15 at the Houston plant. Transportation and storage charges from Houston to Chicago amount to $5 per hundredweight (cwt.). Each packaged shirt weighs 1 pound. As an alternative, the company can have the shirts produced in Taiwan for $4 per shirt (including the cost of raw materials). The raw materials, weighing about 1 pound per shirt, would be shipped from Houston to Taiwan at a cost of $2 per cwt. When the shirts are completed, they are to…

Module Five: The Sacraments

Trace the development of the celebration of the Sacrament of the Eucharist from the early church with special reference to how it is understood and celebrated in the Church since the Second Vatican Council. Assignment: 3. Trace the development of the celebration of the Sacrament of the Eucharist from the early church with special reference to how it is understood and celebrated in the Church since the Second Vatican Council. We all have experience of ‘celebration’. When I think of a celebration what comes to mind are the external factors, the cake, candles, and the food. Sometimes we forget the real meaning of celebration, the story behind the festivity. The celebration of the sacrament of the Eucharist is where we…

Amusement Parks Are A Great Place

Amusement parks are a great place to see Newton’s laws of motion in action. Choose your favorite ride and describe the parts of the ride that illustrate each of Newton’s laws of motion. You are only required to give a written description; however, if you would like, you may draw and label a picture in addition to the paragraph explanation. I’m using a roller coaster for my example. 1.) The roller coaster doesn’t move until force is used upon it. 2.) When the roller coaster goes down after reaching a very high point in the ride, gravity makes it speed up. 3.) The roller coaster is on top of the track, the track applies a opposite or equal force on…

Synthesis of Organic Aspirin

ABSTRACT: The purpose of this experiment was to find out how a reaction undergoes for a globally known painkiller called aspirin, and to become familiar with achieving successful yields. Aspirin is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid to form a crude solid. Filtration is used separate the impurities from the crude aspirin. To get purified aspirin, the precipitate was heated until all the excess had been removed. The end product is pure dry aspirin. Though there was too much room for error the yield percentage will almost never be a hundred percent. INTRODUCTION: In 1897 Felix Hoffman synthesized acetylsalicylic acid when he was treating is father with today’s so…

Conservation of Momentum Practical Write Up

AIM: To investigate if momentum is conserved in two-dimensional interactions within an isolated system. HYPOTHESIS: Without the effects of friction the momentum will be conserved in the isolated system. In all three experiments the momentum before the interaction will equal the momentum after the interaction. METHOD: An air hockey table was set up and a video camera on a tripod was placed over the air hockey table. The camera was positioned so it was directly above the air hockey table facing downwards. The air hockey table was turned on and two near identical pucks were placed on the table, one at one end of the table and one in the centre. The puck at the end of the table was…

Investigating circular motion

By plotting the graphs it can be observed the y axis is equal to v” and the x axis is given as r (radius), the gradient is given by (y2 – y1) / (x2 – x1). By working out the gradients it can be seen that the gradient for 50-gram masses is approximately 26, whilst the gradient for the 100-gram graph is approximately 53.27, approximately double the gradient of the 50-gram graph. It can also be observed the any two points taken for the 50 gram graph will have a relatively close gradient to any other two points, hence the graph has an almost constant gradient. The significance of all this will be discussed in the questions. QUESTIONS 1 What…

Bayfield Mud Analysis

The Bayfield Mud Company has had some problems with their 50-pound bags of treating agents. They sent shipped some bags to Wet-Land Drilling, Inc. that were found to be short-weight by approximately 5%. Wet-Land first did their own study on how many bags were short and by how much. They randomly sampled 50 bags and found the average net weight to be 47.51 pounds. Wet-Land then contacted Bayfield Mud about the situation. Bayfield gave a 5% credit to Wet-Land for the mistakes. Wet-Land was not completely satisfied with the credit because the errors in the weight of the bags could have hurt their operations. Wet-Land informed Bayfield Mud that if something like this happened again, they would take their business…

Bayfield Mud Company

The Bayfield Mud Company has had some problems with their 50 pound bags of treating agents. They sent shipped some bags to Wet Land Drilling, Inc. that were found to be short-weight by approximately 5%. Wet Land first did their own research on how many bags were short and by how much. They randomly sampled 50 bags and found the average net weight to be 47.51 pounds. Wet Land then contacted Bayfield Mud about the situation. Bayfield gave a 5% credit to Wed-Land for the mistakes. But We Land not completely satisfied with the credit because the errors in the weight of the bags could impact their operations. Wet Land informed Bayfield Mud that if something like this happened again,…

Stoichiometry Precipitation

The calculations completed for this experiment include determining the amount of Na2CO3 needed to do a full reaction. This was calculated through stoichiometry calculations: Molar mass was first calculated for CaCl2*2H2O Ca = 40.078g Cl2 = 35.453g*2 = 70.906g 2H2 = 1.00794g*4 = 4.03176g 2O = 15.9994g*2 = 31.9988g 40.078g + 70.906g + 4.03176g + 31.9988g = 147.01456g or 147.0 g CaCl2 1g CaCl2 * 2H2O x (1 mol CaCl2 *2H2O/147g CaCl2 *2H2O) = 0.0068 mol of CaCl2*2H2O Molar mass was then calculated for Na2CO3: Na2 = 22.9898g*2 = 45.9796g C = 12.0107g O3 = 15.9994g*3 = 47.9982g 45.9796g + 12.0107g + 47.9982g = 105.9885g or 105.99g Na2CO3 Then using the molar mass of Na2CO3 and the 0.0068 mol of…

Separation of a Mixtures Lab Report

The purpose of the experiment was to separate an initial heterogeneous mixture composed of 5.00 grams of salt, 2.00 grams of sand, 50.0 mL of water, 15.00 grams of pebbles, and 1.00 gram of iron filings, and leave as much salt as possible remaining. Using separation techniques including magnetizing, evaporation, filtration, etc. the heterogeneous mixture was thoroughly separated into 4.88 grams of salt. There have been some errors regarding the isolation techniques and processes, however, the mass of salt at the end is substantial enough to conclude that results obtained are sufficient compared to the initial mass Introduction and Background The point of this experiment was to separate the different components present in a heterogeneous mixture. In doing so, four…

E-media fast report

Being a person who is working with e-media every day, my expectations for a week without any of these sources were rather pessimistic. But still I considered it a nice tool to see the dependency on e-media, which a big part of the population is suffering from. As the week of sacrifice began, the problems of staying away from mass media were not too big, but rather many opinions of replacing the hours spent in front of screens revealed themselves. After running through the park there was still enough time to buy fresh vegetables and cook a nice meal. Instead of turning on the TV, the evening program changed into a board game evening with the roommates. This was all…

Separation of a Mixture of Solids

I really enjoyed this lab. After reading the introduction I started by making my own flow sheet of how I thought this lab would work. I was reminded about solubility which is defined as the amount of the solute that will dissolve in a given amount of solvent and that the extent to which a substance dissolves depends mainly upon the physical properties of the solvent and of the solute and to some extent upon the solvent’s temperature. With that being said I came to the conclusions that the salt would need hot water to separate from the mixture, the benzoic acid would need cold water to separate, the sand would settle on its own, and the iron filings could…

Mass Society Theories, Social Responsibilty Theory and the Media

The first half of the twentieth century played a vital role in the state of the present media. The century commenced with the influx of new forms of media as modernization uncontrollably invaded all social forms. The dominant medium of the nineteenth century, the newspaper, sustained its power at the beginning of the century. Moving pictures, or film, was born and started to form its own cult of followers. The entrance of radio and television also received a warm welcome from the masses in the succeeding decades. These innovations in media technology received harsh criticisms from different sources (Baran & Davis, 1995). The impact of the new media technology in the recent course of history was evident. Thus, it incited…

The Ordered Universe Assignment

1. Why was the Ptolemaic system accepted as an explanation of celestial motion for over a thousand years? What did it explain? What system challenged the idea that Earth was the center of the universe? The Ptolemaic system says that the Earth is the center of the universe. Everything else surrounded the Earth. The Copernican system challenged the belief that Earth was the center of the universe. The major difference between the Ptolemaic and Copernican universes is that the Copernican universe puts the Sun at the center rather than the Earth. Both systems both assumed that all orbits are circular though. 2. What were Tycho Brahe’s principal contributions to science? How did he try to resolve the question of the…

Conservation of Mechanical Energy

Background: Kinetic energy is said to be the energy of motion. Kinetic energy can be defined through this equation: KE=12mv2 (equation 1) Where m is the mass of the object in motion, and v is the velocity of the moving object. Potential energy is the energy associated with the forces that depend on the position of the object. However, there are specific types of potential energy and in this lab we will consider gravitational potential energy. Gravitational potential energy is the energy possessed by the objected due to earth’s gravity. This can be specifically defined by the equation: PEgrav=mgy (equation 2) Where m is the mass of the object, g is the acceleration due to gravity and y is the…