Business Economics & Public Policy (BEPP) Harvard edx Energy within Environmental Constratints - Questions and Answers

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Basic Questions Bookmark this page Multiple Choice 1/1 point (graded) This a multiple-choice problem. You will choose just one response, receiving credit for the right answer. Select a vowel fro... m the list below. A correct B C D E Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Hint Show Answer Dropdown 1/1 point (graded) This is a dropdown problem. It's basically identical to a multiple-choice problem, it just displays things in a different way. Dropdown problems only ever have one correct answer. Which of these numbers is a prime number? correct Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Hint Show Answer Checkboxes 1/1 point (graded) This a checkbox problem, also known as a "check all that apply" problem. You will choose ALL of the correct responses, receiving full credit only if you select all of them and none of the incorrect answers. 17 Schlumberger-Private This problem also allows for partial credit! It uses a scheme called "Every Decision Counts," which is the standard scheme in this course. Each choice is worth an equal amount of the total credit (20% in this case). Try answering the question different ways to see how partial credit works! Which of the following are vowels? Select all that apply. A B C D E Complex Questions Bookmark this page Numerical Input 1/1 point (graded) Some problems require a numerical input. Your answer will be marked correct if it is within a certain range of the right answer (usually about 5%, though it varies from problem to problem). If you need a calculator, you can find an icon in the bottom right-hand corner of your window that will show one for you. Click the (i) button to learn how to use it. You can also find many good calculators online, from Google's push-button calculator to Wolfram Alpha. Enter the approximate value of the mathematical constant π (pi): correct 3.14 Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Exponential Input 1/1 point (graded) Very large or very small numbers are best input with exponential notation. For instance, the number 8,000,000 (eight million) is equal to 8×106. In this course, you can enter 3.14 Schlumberger-Private that as either 8 * 10 ^ 6 or as 8e6 in these problems. Try out exponential notation in the question below. One gigajoule is equal to 947817 British thermal units. Enter this number below in exponential notation. The tolerance on this question is 5%. BTU correct 9.47×105 Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Formatting Numbers While there is a 5% tolerance for most of the problems in this course, you must also be sure to enter your numbers in the right format. If you type "9.48e5" in the answer box above, the computer knows how to interpret that. Similarly, it knows how to interpret "9.48*10^5" or"9.48 * 10 ^ 5" (with spaces). What it doesn't know how to do is handle "9.48 x 10 ^ 5" with an "x" instead of a star. That little change throws things off. You need to use exactlythe right formatting. This is one of the most common errors made by people who are new to edX. If you are working on a numerical problem, you should double-check your formatting before entering each answer. Also - did you look at the answer to the last problem? It contains extra information about partial credit in numerical problems! Go take a look if you didn't see it before. Matching 1.0/1 point (graded) This is a matching exercise. Drag the elements on the left into the ones on the right to create a match. Click on the [-] to remove the match. You can match items with more than one other item, but you should choose the best match if you can. Click on the individual items for a better view if you need it. This problem type gives partial credit! Each correct assignment is worth one point; each error takes a point away. Play around with different matches to see how it works. 9.47e5 Schlumberger-Private Syllabus Quiz, Part 1 Bookmark this page Now that you know how to answer edX questions, it's time for your first quiz. Below are some quick questions to make sure you understood the most important highlights from our syllabus. This should be very easy - all of the information can be found on the Syllabus, the Schedule page, and in the introductory videos in this section. A syllabus quiz might seem a little silly, but reading the syllabus carefully will improve your course experience. Also, our course staff often spend a substantial amount of time answering questions where the answer is in the syllabus. We're always happy to help, but hopefully this quiz will help you know the most important information before starting the course. Unlike the practice problems, this quiz is graded, so do your best! This quiz appears as Work01 on your Progress page. Annotate Collaboration Schlumberger-Private 1/1 point (graded) Select all that apply. Which of the following are acceptable ways to collaborate? Working jointly to develop an overall approach to an assignment Taking someone else’s formulas and plugging in your numbers to get the final answer Posting answers to a problem before the deadline Getting hints from peers or course staff if you’re stuck correct Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Graded Assignments 1/1 point (graded) Select all that apply. Which of the following types of graded assignments appear in this course? Quizzes Practice Exams Coursework Peer-graded Essays correct Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Course Content 1/1 point (graded) In this course you’ll learn... (Select all that apply.) Details of solar and nuclear power Details of wind power and biofuels Environmental impacts including climate change, air pollution, and land use The flow of energy through modern economies, including costs Details of end uses of energy (tranportation, industry, etc.) Schlumberger-Private Lots of theory, e.g. electrodynamics as a foundation for understanding solar panels Lots of details about real world devices, e.g. the performance and cost of modern commercial solar panels How to critically compare energy options, using good references and combining quantitative and qualitative analysis correct Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Deep Dives 1/1 point (graded) In this course, deep dives are... Underwater explorations Our recommended resources for learning more about a topic correct Required readings Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Navigating from Page to Page 1.0/1.0 point (graded) EdX courses have many parts to them. You can find page links at the top of the site, sections and subsections in the course overview, and the Contact Us button on the far left of your window. Some subsections (like this one) also have multiple pages. Where can you find the links that take you to these pages? Select all that apply. Via the buttons in the "ribbon" at the top of the page. Via the left-right arrows in the "ribbon" at the top of the page. Via the left-right arrows at the bottom of the page. Via links in the course that take you to a specific page. Schlumberger-Private Syllabus Quiz, Part 2 Bookmark this page Certificates 1/1 point (graded) If you pass this course and pay for a verified certificate, where will you get your certificate? This course does not give certificates In e-mail In your edX dashboard correct In the mail Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Grades 1/1 point (graded) Where can you find your grades? On the Progress page correct By e-mailing edX On the Discussion page This course is ungraded Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Deadlines 1/1 point (graded) When are the deadlines for your work in this course? There are no assignments in this course. Every Sunday night at 23:30 UTC. As long as we get it done before the last day it's ok. correct Submit Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Where to Learn More 1/1 point (graded) Schlumberger-Private Where can you go for more information on this course and its topics? Select all that apply. I can visit the discussion boards. I can read the edX FAQ page. I can use the Energy Resources Page. I can search the web and beleive anything I read. I can search the web and carefully check what I find. I can read books on energy and the environment written in the last five years. I can read books on energy and the environment written fifty years ago. Background Questions Bookmark this page Background Questions These questions help you decide if you have appropriate background knowledge for this course. They cover the kinds of introductory physics and chemistry we assume students are comfortable with, as well as some small calculations. Please answer quickly with your best guess, and try to finish in less than 15 minutes. Annotate Unit Conversion Many of the problems on this page require you to convert from one unit to another - for instance, from miles to kilometers, or from gigajoules to kilowatt-hours. There are many different resources available online to help you with these conversions, and we encourage you to become familiar with one of them and use it throughout the course. Some options include:  Using a search engine, like Google or Bing, and typing in "20 miles in kilometers"  Using a site designed for unit conversions, like UnitJuggler.  Using a tool like Wolfram Alpha, which does unit conversions and also has curated data on energy costs and energy content. Schlumberger-Private Annotate Power or Energy? 0.5/1 point (graded) Some of these options are examples of energy, and some are examples of power. Put a check in the box for all the examples of power. Which of these are examples of power? This sandwich has 600 Calories That exercise burns 500 Calories/hour correct Our household used only 100 kWh of electricity last month My computer uses 60 watts of electricity correct partially correct Explanation Calories and kilowatt-hours are both measurements of energy. Watts and calories per time are both measurements of power. Submit You have used 5 of 5 attemptsSome problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Show Answer Answers are displayed within the problem Review Sandwich-Powered 0/1 point (graded) How many watts do I consume if I eat a 600-Calorie sandwich in 600 seconds? watts incorrect 4180 4180 Explanation Each calorie is 4.18 joules of energy. 600 food calories becomes 600,000 regular calories, which is 2,508,000 joules of energy. If we consume this over 600 seconds, the rate of consumption is 4,180 watts. Partial credit is awarded for an answer that missed the conversion between food calories and regular calories. Submit You have used 10 of 10 attemptsSome problems have options such as save, reset, hints, or show answer. These options follow the Submit button. Hint Show Answer [Show More]

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