...Rivercrest CDD Board of Supervisors Daniel J. Leventry Chairman Elaine Sellent Vice Chairman Lisa Fernandez Supervisor Frank Nocco Supervisor Esther Torres Supervisor CDD Staff Meritus Districts 5680 West Cypress Street Suite 5680A, Tampa, FL 33607 Telephone: 813-397-5121 A Bi-Monthly Publication of the Rivercrest CDD January Issue 2014 Greetings Rivercrest Residents Frank Nocco, Supervisor Happy New Year Rivercrest and welcome to 2014. On behalf of your CDD Board of Supervisors and staff we wish you and your family the absolute best for the coming year. Our projects continue on plan and there is little to update you on right now, however the board expects to have big news in the not too distant future so instead of a long update of CDD Board activities, may I take the liberty of sharing some of my memories from my childhood growing up on Long Island, New York. I sincerely hope that you pause and take a minute and reflect on your personal experiences. Television was fairly new and the screens were hardly there at all let alone being 60 inch plasma or LED units. If one’s family splurged or were well heeled they owned a fancy console TV, a huge piece of furniture who’s cabinet was made of very fine finished wood. Some even had flip top record players in them and ultra-fancy ones were super hi-tech stereo units. When Tony Bennett, Frank Sinatra, Dean Martin or Andy Williams records weren’t playing the TV was on. There was Lucy, The Honeymooners, Milton Berle and Jack Benny...
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...Abstract: In performing the Simple Harmonic Motion Lab, our goal was to determine the period of motion for objects performing simple harmonic motion. We did five trials of measuring the time it took a pendulum to make 30 complete oscillations. We divided that time by 30 to get the period and then took the average of all 5 trials, getting an average period of 1.88 seconds. To compare our results, and see if they were correct, we used the given equation for the period of motion that includes the length of the pendulum to calculate the period for the same pendulum, resulting in 1.87 seconds, which agreed with our earlier results. This shows that period of oscillations can be determined by length and gravitational acceleration, and doesn’t depend on mass. In our other activity, we measured the period of an oscillating mass connected to a spring. We had a hanging spring, and hung mass to the bottom of it, each time measuring the change in length of the spring from the time before. To find the spring constant, we used the masses added to calculate each of their elastic forces, by multiplying each by gravitational acceleration, then plotting them with their corresponding spring deformation, and the slope of that graph was the spring constant, k, which was 8.22 N/m. Using this value, we calculated the period of motion for the mass of 0.1 kg using a different given equation than the one before, obtaining a period of 0.69 seconds. To verify our results, we used the VideoCom...
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...bigger the beaker the more washers it would hold and need to make it Awash and the other way around. The data supports my hypothesis because, beaker 4 was the smallest so it didn't need many washer while beaker 2 was the biggest which needed 6 small washers, including 6 large washers. I think my data is not reliable because the graduated cylinder we used to measure the volume did not have the correct measurements so our data is a little off. This experiment is like something in the real world because a hot air balloon uses buoyancy to float and if there are too many people then the balloon will not have enough power to go up in the air. I think that my procedure is explained well because if I did not know the lab I could look at our procedure and do the correct lab. Our lab could be more accurate because if we had a better way to measure the volume of the beakers then we would have less...
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...Acceleration of a Cart Purpose: The purpose of this lab is to find the relationship between acceleration, force and mass using a cart system. Equipment: • Motion detector • Pasco GLX • Cart • String • Pulley • Hanging Weights & Metal Cubes • Ramp • Ruler Procedure: Experiment 1: 1. Weigh and record the mass of the cart (this will be kept constant for all trials) then the mass of the cart with all the hanging weights on top of it. 2. Take 1 hanging weight off the cart and attach it to the end of the string on the cart with the other hanging weights still on top. 3. Place the cart on the ramp in front of the motion detector. 4. Set the GLX using the correct units for the y and x axis for graphing. Then measure 20cm away from the motion detector, place the cart there and start the GLX and release the cart from 20cm at the same time. Stop the GLX and the cart few centimeters before the cart reaches to the end of the ramp for precise data. 5. Repeat steps 2, 3 and 4 by adding 1 hanging weight to the string of the cart with the previous hanging weight already on the string until all hanging weights are used and not left on top of the cart. Then record data. Experiment 2: 1. Weigh the hanging weight and record the mass (this will be left constant for all trials). 2. Add a metal cube on to the top of the cart and weigh and record the mass of the cart with metal cube. Then...
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...* Derive the expression shown on the site for a and s. (What the site calls s, is actually displacement or ∆x). Please note that s or ∆x is simply the distance from the starting point of the wagon to the light barrier. Remember, the wagon begins starts from rest. * Vary the values of M, m and , so that you have 2 different combinations. Make sure that is zero (frictionless case) for the first combination and non-zero(case with friction) for the other. For example, for you first run, M could be 100g, m = 50 g and = 0.00. For the second run, you could take M to be 100g, m = 30 g and = 0.25. Remember, these are just suggestions, you can (and should) think of your own values. * For each run, make sure that you have a separate table showing at least 10 data points with s and t values). In order to get different data points, please shift the light barrier’s (LB) position, so that the value of s changes. Be careful that you do NOT change the value of any other parameter while doing this. In other words, your table would have currently have only 2 columns, with s and t vales. * To this table, add a third column showing t2 values. In other words, if your entry in the t column is 3.209s, the corresponding entry in the t2 column would be 10.3s2. * Use the table to make a graph of s vs. t2. Find the slope of this line. Multiply the value of slope by 2. This is your value of a from the...
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...Lab Assignment 4: Types of Force Instructor’s Overview In many physics problems involving Newton’s laws of motion, you’ll see statements like, “assume a frictionless surface” or “neglecting air resistance…” In this lab we will be exploring both friction and air resistance, two resistive forces that are critical in the design of real-world products and systems. Understanding the effects of these types of forces is essential in the design of such things as aircraft, automobiles, braking systems, and countless other objects. This activity is based on Lab 4 of the eScience Lab kit. Although you should read all of the content in Lab 4, we will be performing a targeted subset of the eScience experiments. Our lab consists of two main components. These components are described in detail in the eScience manual. Here is a quick overview: * In the first part of the lab, you will measure the force it takes to pull objects of different mass. This experiment focuses on the effects of frictional forces. (eScience Experiment 1) * In the second part of the lab, you will investigate the effects of air resistance by performing controlled drops of coffee filters. Notes: * Please follow the instructions in this document for the air resistance experiment. * Record all of your data in the tables that are provided in this document. Take detailed notes as you perform the experiment and fill out the sections below. This document serves as your lab report. Please...
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... | | | | | | | | | | | | | | | | | | | | | | I introduction DC data and calculation AD analysis and discussion RC results and conclusion Q1/Q2 quiz/prelab PI principal investigator points PG personal grade Introduction: The purpose of the lab is to study the effects due to magnetic fields in motion and also to determine the qualitative features of electromagnetic induction. Procedure: 1. For the Part 1 of the lab, a solenoid was connected to a galvanometer, as shown in the data and calculations. First, the North pole was inserted into the coil, then in the opposite direction, with the South Pole first. Then, the magnitude and sign of the deflection on the galvanometer was recorded in μAmps. Also, an exact sketch is made of the solenoid, the direction of the velocity, the induced magnetic field, the induced current and the magnetic polarity of the solenoid induced in provided in the data and calculations portion of the report. 2. The magnet was inserted again following step 1, but with a faster speed and everything sketched again. Then, The South pole was inserted first and step 1 followed again for both, slow and fast speed. 3. For Part II of the lab, an electromagnet was constructed with the power supply off. In this set up the primary coil had a larger diameter wire and...
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...Physics Lab Report Sample Table of Contents CHAPTER 1 OBJECTIVE …………...……...………...............................3 | | CHAPTER 2 THEORY …………………………………………………...4 | | CHAPTER 3 PROCEDURE ……………………………………………...7 | | CHAPTER 4 4.1 DATA TABLE ………………………………………...9 | | 4.2 GRAPH ………………………………………………..10 | | CHAPTER 5 ANALYSIS …………………………………………………15 | | CHAPTER 6 ANSWERS AND COMMENTS …………………………..19 | | CHAPTER 7 CONCLUSION……………………….…………………….20 | | REFERENCES …………………………………………….21 | | LAB REPORT RUBRIC …………………………………..22 | | Chapter 1 Objective To determine the motion of the cart as it travels down the inverted ramp though the influence of gravitational attraction alone by plotting the velocity per unit-time graph. Chapter 2 Theory Motion: In physics, motion is a change in position of an object with respect to time. Motion is typically described in terms of velocity, acceleration, displacement, and time. Motion is observed by attaching a frame of reference to a body and measuring its change in position relative to another reference frame. A body which does not move is said to be at rest, motionless, immobile, stationary, or to have constant (time-invariant) position. An object's motion cannot change unless it is acted upon by a force, as described by Newton's first law. An object's momentum is directly related to the object's mass and velocity, and the total momentum of all objects in...
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...Acceleration Due to Gravity Tushar Agarwal 17st November 2014 Aim-In this experiment I will be calculating the value of gravity by the drop of the ball. I will be measuring the distance and finding out the time . Distance will be changed however the size of the ball and the type of the ball will remain constant , The time will be then give me the value of gravity by the suvat equation ,where acceleration will be the subject . Background Knowledge.For an object to move, a force that is greater than its opposite force needs to act upon an object. Force =Mxa where in this case at least acceleration is due tp gravity . Every falling object accelerates at a constant rate and this happens simply due to the force of gravity ,so mathematically the distance “s” that the object is travelling is half the acceleration times of time squared additional to the initial speed and time . Now , We are going to make a the subject of the equation .After making a the subject of the equation we find out that the acceleration due to gravity is twice the distance of Time Squared will equal to acceleration due to gravity . The answer should be somewhere close to 9.81m/s-2 Time (m/s) Distance(m) The graph above shows the relationship between the two variables .In this experiment distance is the independent variable and Dependent variable is time . As Distance increases time will...
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...Chapter 1, Introduction CHAPTER 1 Conceptual Problems C1. A room in a house has a floor area of 120 ft2. Which of the following is most likely the approximate volume of the room? a. 3 m3 b. 30 m3 c. 300 m3 d. 3 000 m3 C2. When SI units are plugged into an equation, it is found that the units balance. Which of the following can we expect to be true for this equation? a. The equation will be dimensionally correct. b. The equation will be dimensionally correct except sometimes in cases when the right hand side of the equation has more than one term. c. The equation will not be dimensionally correct. d. All constants of proportionality will be correct. C3. How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons and protons? Think of your answers in terms of order of magnitude. a. about a decade b. about a century c. about a thousand years d. since Aristotle C4. Consider the sine of any angle between 30° and 40°. If the angle were doubled, what would happen to the sine of the angle? a. It would double. b. It would more than double. c. It would increase but be less than double. d. In different cases, it could do any of the above. C5. There are other ways of expressing uncertainty besides significant figures. For example, suppose a quantity is known to have a value between 20.4 and 20.0 and our best estimate of the value is midrange at 20.2. We could write the number as 20.2 +/- 0.2 and say that the number has a 1% uncertainty. We would...
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...Name 2) Which color vector (arrow) represents velocity and which one represents acceleration? How can you tell? The green arrow represents velocity and the blue arrow represents acceleration. This is apparent because the velocity is reliant on speed and direction, while acceleration is reliant on the change in velocity. 3) Try dragging the ball around and around in a circular path. What do you notice about the lengths and directions of the blue and green vectors? Describe their behavior in detail below. I noticed that the green arrow points the direction I am dragging and stays relatively the same while the blue arrow fluctuates rather rapidly at a perpendicular angle of the green arrow. The velocity or green arrow is always pointing in the direction I am moving and since I am going a constant speed it stays the same length. The blue arrow is showing the acceleration due to the rotation and it fluctuates rapidly due to me being unable to create a perfect speed and circle around a focal point. 4) Now move the ball at a slow constant speed across the screen. What do you notice now about the vectors? Explain why this happens. When I move them in the same direction they are even/on top of each other. This happens because the velocity or direction and speed are constant making the acceleration constant. 5) What happens to the vectors when you jerk the ball rapidly back and forth across the screen? Explain why this happens. The blue arrow goes with the green the shoots in the...
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...Lab Report Format Data is collected in groups. Lab reports may be submitted individually or as a group. If the report is written by the group, all members must contribute to the report. Remember that good technical writing is terse. Organization and readability should be a priority, as you are communicating your work to others. Use proper English; you will be graded on your grammar and syntax. Finally, do not submit work with spelling errors – all of the software you are using has spell-check capability. Requirements • A word processor with the ability to format mathematical equations. Microsoft Word has an equation editor and is installed on all lab computers. • A spreadsheet capable of performing extended linear regression analysis. The LoggerPro application is capable of performing both linear and non-linear curve fitting, and is the best choice. Microsoft Excel is another alternative. Each section of the report is discussed briefly below. Be sure to look at the sample report to see a finished product (compare it with the original lab experiment handout). Word Processor Document (60 points) Cover Page (5 points) Include the number and title of the experiment, your name, class, section, the date the report was submitted, and the names of all lab partners who worked with you. Objective (5 points) This is the main objective of the experiment. This should be no more than 15 – 20 words. Theory (10 points) Present and explain each equation used in your analysis. This...
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...%\addcontentsline{toc}{section}{Activity 3.19} \section*{Activity 3.19} \begin{enumerate} \item \begin{enumerate} \item The car was moving at a constant speed as shown on the graph and then stop immediately.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_E.PNG} \item We must assume that the lift was moving at a constant speed. Now, he was moving at a constant speed, and then slow down and then rest for a while, after that he took a lift which was moving at a constant speed and the lift suddenly stop.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_H.PNG} \end{enumerate} \item There is a graph that represents each statement in (1). \item \begin{enumerate} \item The object is moving at a constant speed, and then suddenly increases the speed and then moves at a higher constant speed.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_A.PNG} \item The object decreases speed at a constant rate until it rest.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_B.PNG} \item The object decreases speed rapidly until it reaches a resting point, and then accelerate exponentially.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_C.PNG} \item The object was moving at a constant speed, and then increases the speed and move at higher constant speed and then increases the speed again to move at higher constant speed, then suddenly it decreases the speed in a constant rate until it reaches a resting point.\\ \includegraphics[scale=0.5]{Pictures/actvity3_19_pic_D...
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...Phvsics Lab Report Format (Sample Report Attached) General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results. Part of your lab experience should be learning how to organize and present your work in a scientific way. There is no framework that can be used as a "one size fits all", therefore this sample lab report should only be used as an example. Any lab report should have the following features: o It should be concise but should also contain the necessary details and well-developed explanations. It should be organized. You should enable the reader to quickly find the information he or she may be interested in. It should contain all the relevant information and reasoning. You should enable the reader to validate your conclusion. A possible way to achieve this is using the following framework: o o . o o o o . Obiective: State what you want to achieve in this experiment A formal way to do this is to state a question or hypothesis that you want to address. Method: You should include a summary of the lab procedure in your words; do not merely copy what is in the manual. This section should demonstrate your understanding of what exactly you measured and how you measured it. Data: In this section you should include the raw data you measured; generally, an estimate of the error should accompany all measured values. Be sure to present...
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...Laboratory Report Guidelines Ryerson University Department of Physics Writing a strong lab report is a skill that often takes significant practice. Strong reports are: • structured in a clear and organized fashion. • as concise as possible, and yet sufficiently detailed that it does not omit any of the information required to fully communicate your work and results. Ideally, a lab report leaves any reader confident in the validity of the results, and with enough information that they could repeat the experiment. The evaluation of your report will be based on your ability to understand the goal of the experiment, your understanding of the applicable physical principles, your ability to perform the experiment attentively, and your ability to clearly communicate its results in a logical and coherent fashion. Report contents: 1. Title Page 2. Objective...
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