...Ryan Church Per. 2-3 Testing for Fecal Coliforms Purpose: The purpose of this lab was to test the water for fecal Coliforms. We will do this by testing water sample from the river, the pond, and the tap. After we acquire the water we put it in a vile and then into a petri dish to sit and develop the coliforms. Hypothesis: I believe that we will see a lot of fecal coliforms in the river and in the pond but not in the tap because it goes through a filter, and does not come in contact with animal waste. Data/ Observations: Class Data # of E. coli colonies per 100 mL | Location of the water sample | 33.3 | River | 89.9 | Pond | 0 | Tap | We could tell that the colonies were E. coli colonies because their color was blue/purple. We tested for the E. coli colonies because that is what made the water in the river and pond dangerous to drink. Even though you cannot drink the water in the river and pond you can still swim in it because they had less than 200 E. coli colonies per 100mL. Analysis: 1a. In this experiment our independent variable was the location that we get the water because it is what we change. b. In this experiment the dependent variables was the number of E. coli colonies because it is what we measured. c. In this experiment the controlled variables were the temperature that the water sat in, the amount of sunlight, and the solution that we used to observe the E. coli colonies. 2. After calculating the amount of E. coli colonies per...
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...Mystery Substance Lab Write-Up The haters always say, “Johnny, you’re bad at chemistry.” Well, this lab proved the haters wrong. Charlie and I were the first in our class to guess the mystery substance correctly, (we hope), and we did it while doing the fewest tests (we think). “That’s a weird brag,” the haters would say. I think they’re just jealous. The goal of this lab was to find out as much as possible about the given mystery substance. Charlie and I did that, and more. As I said earlier, we were even able to identify with almost complete certainty what our substance was: ammonium acetate. In general, Charlie and I tried to be as thorough as possible with the tests without being redundant. For example, since we were certain that the substance was an acetate after doing a number of solubility tests, we decided not to do experiments that tested for a sulfate or something else of that nature. Besides trying to avoid redundancy, we also tried to maintain calm, even when a test didn’t go the way...
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...Write-Up for Lab 11.2: Popper Physics SCI121 Week 4 Notes: To figure out the average height for the table below, add up the three heights and divide by 3. To figure out the average time add the 4 time measurements and divide by 4. Table 1: Popper physics data Trial Number Maximum Height (m) 1 1.1 2 1.3 3 1.32 Average: 1.24 Trial Number Time in Air (s) 1 0.90 2 1.18 3 0.97 4 1.03 Average: 1.02 Questions: 1. What is the gravitational potential energy your popper has at its maximum height you measured? Use g = 9.8 m/s2, and a mass of 0.01 kg. Note: For question 1, use the equation for Potential Energy listed below; your potential energy is equal to 0.01 kg times 9.8 m/sec squared times the average height (in meters) The answer is in the units of joules. PE = mgh = PE mgh (0 .01 kg x 9 .8 m /s2 x 1 .24 m) PE 0 .12152 Joules 2. Use the following kinematics equation to calculate the initial velocity of the popper based on how long it is in the air: H = h0 + v0t – ½ gt2 where the final height h = 0 and initial height ho = 0 after the popper travels the total time up and down over your measured time t. Note: For question 2, use the equation initial velocity = ½ gt - this is how the equation rearranges when the two heights = zero. So, multiple ½ times 9.8 (the value for g) times your average time is seconds from Table 1. Your answer will be in m/sec) 3. Use this value for the initial velocity to find...
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...Write-Up for Lab 10.1: Falling in a Gravitational Field PHYS121 Week 3 For this lab you will drop several objects from the same height and observe how they fall and how long each takes to hit the ground. Consider the following as you complete the lab and answer the Write-Up Questions below: * Do the objects fall at the same rate? * What if the objects are different sizes, does that make a difference? Questions: 1. The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation for the force of gravity between two objects. How would that change if the radius of the earth or distance were increased by 100,000 meters. To help you answer this question, please review your textbook, chapter 3, Newton’s law of Gravitation section.) F= (6.67 x10-11N.m2/kg2)(m1)(m2) 100,0002 G is inversely proportional to the square of the distance from the center of the earth. 100 km above the earth's surface, g is reduced by a factor [6370/ (6370+100)] ^2 = 0.969 That would make it 9.51 m/s^2 6370 km is the radius of the earth. For questions 2 and 3, please consult the textbook and additional research materials on Newton’s Second Law of Motion. Pay particular attention to mass, gravity, acceleration and how they inter-relate. 2. How does air resistance alter the...
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...Lesson 2 Lab Worksheet Lab Exercises Lab 1 How TCP/IP Protocols Work through the TCP/IP Model The purpose of this lab is to familiarize the students with the TCP/IP Model and some of the protocols that are used in it. This lab is important to the student because it takes the student through a thought experiment about how data would pass thorough the TCP/IP Model down from the computer and up through the destination computer. By doing this thought experiment the student will come to better understand how different protocols work together to accomplish a specific task. Materials • Word processing document • Textbook Do the Lab Follow Protocols through the Layers of the TCP/IP Model 1. Read though the section of this lesson titled “How the Layers Work Together.” 2. Carefully study Figure 2-11. [pic] 3. In a word processing document, list the layers of the TCP/IP Model and then the protocols that the discussion you read says are used on each layer to move the data from one location on the network to another. The following is what your answer should look like: • Application layer: HTTP • Transport layer: TCP • Internet layer: IP • Network Interface layer: Ethernet 4. List the protocols as they correspond to the TCP/IP Model...
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...Chemistry 129A Syllabus, Spring 2016 Instructor and Contact Information: Sammy Tamras: Lab Sections: MW 9:00-11:50; and 1:00-3:50; and TTh 1:00-3:50 Office: McLane 244 Office Hours: MW 4:00-5:00; and TTh 11:00-12:00, and by appointment E-Mail: stamras@csufresno.edu Lab Coordinator: Dr. Joseph Gandler; email: josephg@csufresno.edu; office: S 362; office hours: M-F 10:00-10:50. CHEM 129A Lab Sections: |MW |09:00-11:50 |S 370 |35547 |S. Tamras | |MW |09:00-11:50 |S 372 |35446 |B. Vue | |MW |01:00-3:50 |S 370 |35141 |S. Tamras | |MW |02:00-4:50 |S 372 |35214 |K. Munshi | |TTh |08:00-10:50 |S 372 |34797 |S. Maitra | |TTh |09:00-11:50 |S 370 |34796 |H. Muchalski | |TTh |01:00-3:50 |S 370 |34798 |S. Tamras ...
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...NETW 310 Week 7 Lab Report Purchase here http://devrycourse.com/netw-310-week-7-lab-report Product Description 1. Looking at the above graph, write a short paragraph on what is happening here with the congestion window and the flight size. (8 points) ß 2. In the results browser, bring up the Global TCP statistics for delay (sec) and segment delay sec). In a short paragraph, comment on the delay graph. (8 points) ß 3. Overlay the statistics for client-received segment ack number and sent segment ack number. Write a short paragraph on why the client numbers are so different from the servers, and an explanation of what is happening. (9 points) ß 1. Given the configuration of the packet discarder, write a short paragraph explaining why the server’s Congestion Window size has this variation. Paste a copy of this window into your answer. When finished, hide or delete the panel. (4 points) ß 2. Examine the statistics for the client node. Can you tell if the packet drops have affected anything on the client? (4 points) ß 3. Examine the delay stats for the entire network (Global) and for the nodes. Can you see any delay caused by these drops? (4 points) ß 4. Copy this window to your answer sheet, and in a short paragraph, explain why the congestion window sizes are different in the two scenarios. (4 points) ß 5. Unselect the servercongestion window and then select server flight size. Show and zoom the window as done previously. Copy this window to your lab report, and in...
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...LAB CHECKLIST 1. BEFORE YOU BEGIN ☐ ☐ ☐ ☐ ☐ ☐ PRINT: Find and Print your lab CHECK FORMAT: Make sure you have all the pages and that they printed correctly READ: Read the ENTIRE lab UNDERSTAND: Look up any words you do not understand in your textbook or approved sources (dictionary, reading material from class) NOT Wikipedia and write the definitions on the lab HIGHLIGHT: Highlight any portions of the lab that seem important, tricky, or that you have questions about PRELAB: Complete any Prelab questions 2. WHILE COLLECTING DATA ☐ ☐ ☐ ☐ ☐ ☐ ASK: Before you begin, ask the teacher any questions that you had while reading the lab READ: Read the instructions again before each new step MEASURE: Make clear and precise measurements – DO NOT FORGET UNITS RECORD: record all measurements clearly, make sure you can find and read them later – DO NOT FORGET UNITS OBSERVE: Make good observations – record what you saw, smelled, felt, heard, etc. No detail is too small and there is often no going back to see it again PARTICIPATE: Make sure that everyone in your lab group is participating and has all of the data recorded 3. AFTER COMPLETING DATA COLLECTION ☐ ☐ ☐ ☐ ☐ ☐ READ: Reread the methods – did you miss anything? Are there any steps on the next page? READ: As soon as you are sure the data collection is complete, read the directions for the lab report/writeup – Do you have all the data you need? How will you need to organize the data? Are you using class, group, or personal data...
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...Physics Lab Reports 1. All lab reporting will be done on binder paper or graph paper as the lab is being conducted. You may use the front and back of each page. If you want to delete something, simply cross it out. All work should be neat and legible. 2. Prepare as much as possible prior to the actual lab day (such as title, problem or purpose, materials, and background information) ---just to give you more time to work with the equipment. 3. October 12, 2014 Jamie Smith P1 Partners: Roy Rogers Dale Evans October 12, 2014 Jamie Smith P1 Partners: Roy Rogers Dale Evans In the upper corner of the first page of each lab, write your name, the date, period, and names of lab partner(s). Example: 4. Give your lab a title. (Creativity is appreciated, but a subtitle should be more descriptive of the procedure.) Example: “Shooting Hoops” (Projectile Motion to a Raised Target) 5. State the problem or purpose of the lab. Example: Purpose: To determine the air drag coefficient for a falling coffee filter. 6. List the materials needed. 7. Provide a brief description of the procedure and/or diagram of the set-up. A labeled diagram is often the quickest and easiest way to do this. 8. Provide a background with necessary equations, derivations of equations, safety comments, and notes about procedure that will reduce error….anything that is important in preparing, setting up, and...
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...order to predict the pH of a solution containing a weak acid or base. • Demonstrate the use of common pH and redox indicators in microbiological media. • Select appropriate reagents to make a buffer having a desired pH. • Determine which compounds undergo the process of reduction and which undergo the process of oxidation. • Describe the basic chemistry of the predominant biologically important elements and their function(s) in microbiological systems. Dr. Andrew Baer Office Hours Monday: 10:30 am – 11:20 am Wednesday: 1:30 pm – 2:20 pm Thursday: 9:30 am – 10:20 am or by appointment Email: abaer@centennialcollege.ca Textbook: Hage, D.S and Carr J.D Analytical Chemistry and Quantitative Analysis, Prentice Hall, 2011 (optional) CH 125 Lab Manual (available on eCentennial) Additional References: Harris, Daniel C., Exploring Chemical Analysis, 5th Ed., W. H. Freeman and Company, 2012. Harvey, David, Analytical Chemistry 2.0 (Available Online – Link on eCentennial) Virtual...
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...Name: Patricia Sellers Date: November 22, 2013 Instructor’s Name: Trena Woolridge Assignment: SCIE211 Phase 2 Lab Report Title: Speciation Instructions: You will need to write a 1-page lab report using the scientific method to answer the following question: • What would happen if a species within a population were suddenly split into 2 groups by an earthquake that creates a physical barrier like a canyon? When your lab report is complete, post it in Submitted Assignment files. Part I: Use the animated time progression of speciation to help you write up your lab report. Part II: Write a 1-page lab report using the following scientific method sections: • Purpose • What would happen if a species within a population were to suddenly split in two groups by an earthquake that creates a physical barrier like a canyon? • Introduction • Reproduction is a natural and normal thing in our day to day lives. Animals and humans reproduce offspring, all year round. Separation is usually the furthest thing from our minds. But, mother natural can always turn anyone’s world upside down. For Example, What if a really bad earthquake hit, and caused the ground to split and drift far away from one another? Many species would be isolated from their families and environments. • Hypothesis/Predicted Outcome • A species is defined as a group of organisms that are able to interbreed to produce fertile and viable offspring under natural conditions. (Audesirk, (2008)...
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...NETW202 Week 5 Lab Report To complete your Week 5 lab report, answer the questions below concerning number conversions and network addressing. Create your report using the template and submit it to the Week 5 Dropbox by the due date. Use the reference documents and websites as required to complete the iLab questions. In order to be eligible to receive full credit, you must write in complete sentences and use the lab report template. Answers that are not written in complete sentences will receive point deductions. Use a red-colored font for you answers. Answers that are not written in complete sentences will receive point deductions. You are to add in any references you do use. Please support all of your decisions. In order to be eligible to receive full credit, you must write in complete sentences and use the lab report template. You are to take off the cover of the template because this is a page of instructions, but include your header. Place your answers in the template below the questions. Remove any graphics or explanations so that your deliverable has questions and your answers only. If you do not use the iLab template and complete the header, you will receive a 2-point deduction on your grade for this assignment. Your Name NETW202, Professor’s Name Current Date iLab #5 Section I: Skillsoft iLabs Lab Grading Rubric Category | Points | Description | Section 1Converting Decimal to Binary and Binary to Decimal— 9 points total * Task 1 * Task 2 * Task 3...
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...Description: Tracing Ethernet Hands-On Lab Instructions: Refer to Hands-On Activity “Tracing Ethernet” on pages 227 and 228 in the textbook. For your convenience the setup application is attached to this lab in Blackboard, so you don’t need to find it online as instructed in the activity. Read the textbook authors comments and discussions for the activity to gain an understanding of the tool and the types of measurements it can take. For this Lab you will need to install TracePlus/Ethernet on your (Windows) computer. (If you have a Mac, the application works fine in VMWare, Parallels, etc. Alternatively, you may use WireShark, Capsa Free, or Packet Peeper, as identified below). In addition to your textbook, refer to your notes taken during the demo of the tool in class. Open the app and select the proper capture interface (Ie – e01, e02, etc. These are your wired connections and wireless connection interfaces, if you have wireless. You may need to try various Ethernet Ports to find some data and get connected to the right interface. You will know you are collecting data when you see packets of information are being displayed. You will see an entry for each packet that arrives). Once the application running and collecting packets of data, as demonstrated in class, do the following: (1) Launch a YouTube video in your browser. Notice the increase in Packets. If you are using TracePlus, you can also see the increase in Bandwidth and %Bandwidth on the virtual Dashboard...
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...Class: SNC2D3-04 Due Date: 08/01/2016 CONCAVE MIRRORS CONCAVE MIRRORS __________________ __________________ How does the distance of the object from a concave mirror affect the size and orientation of the image? 1) COVER PAGE • Use blank paper (not lined) • Put the Lab or Investigation Number in the center of the page and underline it • Put the Title of the Lab underneath it with CAPITALIZED LETTERS and underline it • Put your Name, Teacher’s Name, Your Class, and Due Date on the bottom right corner of the cover page • Put a list of your Group Members (not including yourself) on the bottom left corner of the cover page • No pictures or drawings should be on the cover page (front or back) 2) LAB WRITE-UP • If typed, use blank paper (not lined); if written, use lined paper • Put the Lab or Investigation Number on the top left of the first page and underline it • Put the Title of the Lab on the top middle of the first page, CAPITALIZED, and underline it • The lab write-up should be printed, handwritten or typed neatly • Must include ALL of the following headings (which are underlined) Problem: (Purpose / Question) • Write down the purpose of the lab; what you are trying to determine • This should be done in one sentence • Can be written as a question • Sometimes this is given to you (from teacher or textbook) Hypothesis: • This is an Educated Guess as to what you think is the possible reason or relationship • This is NOT a question...
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...In the apartment of Charlie Gordon’s, a mentally retarded person who has been tested on to see if the experiment can make a retarded person smart permanently but which has been failed, was packing up his clothes and personal items so he can leave New York City and go to an another place where no one ever knew that Charlie Gordan was once a smart guy but then turned back to being a mentally retarded person. When he was slowly turning back to being dumb, he was very depressed and wanting nothing else but being smart again, which he wanted badly. His landlady, Mrs. Flynn, comes to his room and tries to calm him down and make him eat his lunch. “Charlie, you don’t have to worry, everything will be alright. Please eat.” “No, I don’t wanna eat, Im two dumb and sad.” After trying hard enough, Mrs. Flynn gave up and just left the food on the table and left. The next morning Mrs. Kinnian came, who is a teacher of mentally retarded adults and which Charlie Gordan is one of them, was...
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