Module 1 Lab Report Submission File

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Doane University *

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Physics

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Jan 9, 2024

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Module 1 Lab Getting Comfortable with Physics Definitions and Tools Name: Description Lab 01 will begin with a review of some helpful principles in physics, including the concepts of scientific notation and standard units. This will enable you to quickly switch between imperial units, used most often in the U.S.A., and the metric system, used most often in science. Once you are comfortable with this, you will move into defining and utilizing the concept of scale between real-life and a computer screen. This is an essential tool for anyone in the health professions, or engineering, who may want to do data analysis on a screen, from photo or video, like in an x-ray image or sonogram! Lastly you will use the concept of scale to analyze a video of motion which will assist you in your understanding of kinematic variables and the broad application of computer analysis of electronic media. Objectives ● Define and utilize scale, scientific notation, standard units, and kinematic variables ● Define the relationship between the kinematic variables in mathematical and graphical form Materials/Supplies ● Ruler or tape measure ● Digital camera (cell phone camera) Pre-Lab Activity Install and familiarize yourself with the LoggerPro software by Vernier. ● Installing LoggerPro instructions Download the following video (Click the link below to open the video in your browser. Right click on the video to save to your computer): ● Away_Towards.mp4 Activity #1 - Units All future units we introduce in physics will have their basis in these fundamental SI units. Many of them you may recognize, but many you may not. If you are at all unsure of how to convert between units, you can always refer to the textbook or instructor. Additionally, Google has a powerful unit converter built into its search engine. If you simply perform a Google search for the term “unit converter”, the primary result will look something like the snapshot below.

Module 1 Lab Getting Comfortable with Physics Definitions and Tools Figure #1 : You can change the variable at the top and units underneath each number. 1. Now, try using this for yourself. Many recipes one can find online are in metric units, and yet the average American household will have measuring materials in imperial units (inch, pound, gallon, etc.). If you find a recipe which calls for 2 liters of milk, what is that in gallons? Insert a snapshot of your google conversion in the box below . Answer: Scientific Notation: Before continuing on to more interesting tasks, it is worth practicing a bit with scientific notation. This is something you will encounter throughout the course, and so having some practice on it is worthwhile. First take the time to read through the following: ● Wikipedia page on Scientific Notation ● The “ Math is Fun ” page provides a simpler explanation: Now that you have some experience with definition, please try some examples of converting to scientific notation at Khan Academy .

Module 1 Lab Getting Comfortable with Physics Definitions and Tools 2. Take a snapshot of one of your correct answers from the Khan Academy Practice section. Insert the image in the box below . Answer:

Module 1 Lab Getting Comfortable with Physics Definitions and Tools Activity #2 - Scale Next, we introduce the idea of scale in a virtual environment. First begin by grabbing a ruler or tape measure and measuring the pictures of the rulers below: Figure #2 : 12-inch Ruler Figure #3 : 30-inch ruler 3. How many inches do you measure for each ruler? The caption for each contains their purported size. Is that the same as what you measure? If not, why are they different? Type your answer in the box below. Answer: 4.5 inches. No their purported size does not match. They are different because they are scaled down. You may already notice an inconsistency with the two figures above. One is 30 inches and one is 12 inches and yet they are of similar size on the document! If you have done any document or photo editing, you may have encountered the act of re-sizing photos to fit into a set amount of area on a template or document. When inserting the images above, they were resized so that they appeared to be of similar size on this document, even though the actual sizes are quite different. In fact, you may have done this when you answered Question #1! Since many activities done in this class will require you to edit documents in a legible fashion, you may want to experiment with editing sizes and shapes in Google docs. 4. Do you have any questions about how to edit a text cell, photo, or how to demarcate your answers from the questions in google docs? If so, type them in the box below after you have tried searching for the answers on the Google Docs FAQ : Answer:

Module 1 Lab Getting Comfortable with Physics Definitions and Tools Activity 3 Take a digital photo of some household object; an egg, a baseball, a refrigerator. Then measure the object’s actual height or width and copy the photo to your computer. Do not resize the photo! Open the photo with LoggerPro . You must be sure to choose the menu option in LoggerPro that will enable you to calibrate a photo. Choose Insert > Picture with Photo Analysis… See the following screenshot: Once the image is loaded, you will see a screen similar to the one below with your photo in the software: The buttons on the right are the tools we will use to calibrate the photo. You will first click the Set Scale icon that looks like this, . Once you do that, you will be able to click and drag a line from one side of your object to the other, and then you will see a screen that looks like this:

Module 1 Lab Getting Comfortable with Physics Definitions and Tools You must set the image distance to the real-life units you measured with your ruler or measuring tape. In physics we generally like to set the origin of or coordinate system to be the bottom left, so first click on the Set Origin icon, , and then click on the lower-left corner of the image, so we will know that this is the (0,0) point of the x-y axes. Note : Be sure to change the calibration stick to match the orientation of the ruler you used in real life. For example, if you measured the height of a fridge, then you should place your calibration stick in the vertical direction, not horizontal! 5. Write down your actual measurement for the object you chose. Insert the measurement in the box below . Answer: 4 inches Next, you can make any measurement you like in any portion of the photo. Click the Photo Distance icon that looks like this, then use it to make a line. The distance of that line will be displayed on your screen. Do NOT close that distance readout. 6. Insert a snapshot in the box below of the photo opened in LoggerPro with the calibration line, and another random line, showing the actual dimensions. Answer:

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