Introduction to MasteringAstronomy

_____ is the capital of Australia

Canberra

Introduction to Significant Figures

Note: Next Section

The capital of Kenya is _____

Nairobi

Would an answer that generated the response below be considered correct and give you full credit?

yes

Using the correct answer from Part B, calculate the volume of a rectangular prism with a length of 5.6 cm, a width of 2.1 cm, and a height of 6.6 cm. prism with h= 6.6 cm, W = 2.1 cm, and L = 5.6 cm Enter your answer to two significant figures and include the appropriate units.

78 cm^3

The capital of Argentina is _____

Buenos Aires

_____ is the capital of Norway

Oslo

The capital of Canada is _____

Ottawa

Welcome to Mastering Questions

Welcome to Mastering! Mastering presents homework items assigned by your instructor and works with you to answer them. Items typically have an introduction, possibly figures, and one or more parts for you to answer.

Practice entering numbers that include a power of 10 by entering the diameter of a hydrogen atom in its ground state, dH=10.6×10^−11 m, into the answer box. Express the diameter of a ground-state hydrogen atom in meters using a power of 10. Do not enter the units; they are provided to the right of the answer box.

dH = 1.06×10^-10 m In some computer programming languages and software, a shorthand scientific notation for a number such as 3.0×10^12 would be 3.0E12. This notation should be avoided when using the math answer box, because the E will be interpreted as a variable. To correctly enter 3.0×10^12 as an answer, follow the advice given above.

What value should you use as the area of the base when calculating the answer to Part C?

11.76 cm^2 11.76 cm^2 is the correct, unrounded value of the area of the base. It is correct to round to the requested number of significant figures in Part A because calculating the area is your final step. If you want to use that information in further calculations you must use the unrounded value.

(Figure 1) (The link above tells you that this Part has an illustration.) How many months of the year have 28 days?term-12

12 What you are reading now is called a "follow-up comment." These comments typically offer more information or provide an interpretation of the answer you just obtained. Before you move on to a slightly more challenging question, have a quick look at the other buttons available around the answer box give up gives you the answer to the question if you can't figure it out on your own. Your instructor controls whether or not this button is available. my answers brings up a new window that lists all of the answers you have submitted for this question, along with any helpful feedback you received for incorrect submissions.

(Figure 2) The figure contains eight boxes. One of the boxes contains something different from the others. (The link tells you that there is a different figure for Part B. Click on the link to change from the Part A figure to the Part B figure.) Which box contains something different from the other boxes? (You could guess randomly, but if you are not sure about an answer it is best to try the hints.)

Box C A new button, review part, appears when you correctly answer a Part with hints. It allows you to review all that Part's hints, even if you didn't use them, as you might want to when studying for a test. You do not lose any credit for viewing hints with the review part button. The option of giving up by choosing show answer is not available until you have viewed at least one hint. If you didn't look at the hints while answering the last question, you should read through them now for some important information about hints and hint grading. Click on review part and read through the hints now.

Audio Clips Click on the arrow to play the audio file, then use the information given to answer the question below. You can view the text of the audio file to read while you are listening. In which city was Mastering first used?

Cambridge, Massachusetts

Sorting Sorting questions require you to place objects into different categories or bins. An object can belong in only one bin. A bin can remain empty. Before you submit your answer, you can rearrange the objects by dragging them to new bins. To start over, click Reset. Correctly classify each of the given food items as either a fruit or a vegetable. If you need help, click Hints. Drag the appropriate items to their respective bins.

Fruits: Avocado, Banana, Apple, Tomato Vegetables: Carrot, Potatoe You can refer to this question or consult the help if you have difficulty completing Sorting questions later on.

_____ is the capital of Indonesia

Jakarta

Introduction to Multimedia in Mastering Note: Next Section

You may have Assignments that require you to investigate a piece of media prior to answering questions. Remember that the media is available to help you understand the material, so you should always look at it first before you try to answer the questions.

Scientific notation

You may want to enter 367,000,000 in scientific notation as 3.67×10^8. There are two ways to do this. To use a template, click the scientific notation button image button found under the math templates tab image menu. To use the keyboard, Instead of the × symbol, use a multiplication dot (⋅) by typing the keyboard multiplication symbol * (Shift + 8). To input the exponent for numbers written in scientific notation, do either of the following: Click the exponent button image button found under the math templates tab image menu. Type ^ (Shift + 6) from your keyboard. For example, 3.67⋅10^8 can be entered in the answer box by typing 3.67*10^8.

Pop-Up Animations Some types of media may open in a new browser window. Watch this animation and then come back to this window to find the question you need to answer. Click here to open the animation. What is the final shape of the dots in the pop-up animation?

circle

When entering large numbers in the answer box, do not use commas. For example, enter 1276400 for the number 1,276,400. Do not enter 1,276,400. If you accidentally enter commas, you will get a message that your answer has the wrong number of terms. Answer the following question by typing the numeric answer into the answer box. What is the sum of 9260 and 3240? Express your answer numerically to at least three significant figures.

sum = 12500 Note that you can always review exactly what you typed in the answer box by clicking My Answers.

For most answers, you will simply enter your numeric answer directly into the space provided to the right of the equal sign. Answer the following question by typing the numeric answer into the answer box. If you have a gross of items, you have 144 items. If you buy a gross of eggs, how many dozen eggs do you have? Express your answer in dozens. Do not enter the units; they are provided to the right of the answer box.

number of eggs = 12 dozen

Introduction to Numeric Answers This exercise is not intended to test your knowledge of any specific subject material. Therefore, on this problem you will not be penalized for using hints or submitting incorrect answers. Note: Next Section

Overview When an assignment question requires that you enter a numeric answer, you will see an answer box like the one illustrated here. math answer box image To answer this type of question, you will need to type the numeric value for distance in the rectangle between the quantity you are solving for (distance) and the units (meters). In addition to typing alphanumeric values from your keyboard, you can enter non-numeric information by using either the menu tabs above the rectangular answer box (for more information click Help button image (Help) button) or the equivalent key strokes. (click keyboard shortcuts button image (Keyboard shortcuts) button for the list) Grading Tolerance For grading, your numeric answers often (but not always) can be within a tolerance range of the official answer. For example, if the answer to a numeric problem with a tolerance of 2% were 105, answers between 103 and 107 would be graded as correct. If you submit an answer that is rounded to within the grading tolerance but is not the exact answer, you will receive full credit. If this value is needed in future parts use the full precision value for subsequent parts. Significant figures Most questions with numeric answers will require your answer to be given to at least three digits or significant figures. Your answer may be graded as incorrect if you have calculated correctly but then rounded your final answer to too few digits. If a different number of significant figures is required, this will be part of the question's answer instructions. When you need to do multiple calculations to get an answer, use more significant figures than required in each calculation and round at the end only. Rounding too early can cause your final answer to be outside the tolerance range.

Ranking Ranking questions require you to place objects in a particular order. Rankings are almost always ordered from left to right. Read the answer instructions each time for specific directions. To rank two or more equivalent objects, drag one object into the ranking bin and place the equivalent object over it. These objects will then align and a vertical gray bar will appear behind them to indicate the equivalence. Sometimes, it is impossible to rank the objects based on the information given. In such a case, click on the box labeled "The correct ranking cannot be determined." below the ranking window. Before you submit your answer, you can rearrange the objects by dragging them to new locations within the ranking bin. To start over from scratch, click Reset. Each of these geometric shapes has a different number of sides. Rank these shapes from greatest to fewest number of sides. To rank items as equivalent, overlap them.

Greatest Number of Sides: Octagon Hexagon Pentagon Overlap Square and Rectangle Least Number of Sides: Triangle You can refer to this question or consult the help if you have difficulty completing Ranking questions later on.

Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76 cm2 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to two significant figures, your answer will fall outside of the grading tolerance and be graded as incorrect.) Enter your answer to two significant figures and include the appropriate units.

12 cm^2 This is your final answer, rounded to two significant figures.

Labeling Labeling questions require you to place the labels in the appropriate targets located on the background image. Each target can be assigned only one label. Some targets may be left blank. There may be more labels than targets. Not all labels must be used. In some questions, each label can be used once. In other questions, labels can be reused. When a label can be reused, it will still appear in the label holding area even though you have placed the label on a target. Before you submit your answer, you can rearrange the labels by dragging them to new targets. To start over, click Reset. Identify the continents by dragging the labels to the appropriate targets.

Top Left: North America Bottom Left: South America Middle Top: Europe Bottom: Antarctica Middle Bottom: Africa Top Right: Asia Bottom Right: Australia You can refer to this question or consult the help if you have difficulty completing Labeling questions later on.

Introduction to Vocabulary, Labeling, Sorting, and Ranking Questions Vocabulary, Labeling, Sorting, and Ranking are four types of questions that you will find often in Mastering. Work through the exercises below to familiarize yourself with these types of questions. Note: Next Section

Vocabulary (Sentence Completion) Vocabulary (Sentence Completion) questions require you to drag terms to the appropriate sentences. No blanks should be left empty. Some sentences will have multiple blanks that must be filled. In some questions, a word can be used more than once. There may also be more words than blanks; when this happens not every word will be used. In some questions, it is possible to reorder sentences. When sentences must be reordered, you will see up and down arrows indicate that sentences may be reordered preceding each sentence. Click and drag to reorder. Before you submit your answer, you can rearrange the terms or sentences by dragging them to new locations. To start a Vocabulary (Sentence Completion) question over, click Reset. Drag the terms in the left-hand column to the appropriate blanks in the sentences on the right. Make certain all sentences are complete before submitting your answer.

You can find more information about how you are graded by clicking on the Grading Policy link at the top of each assignment page. To view your instructor's grading policy now, return to your assignment page. When you come back and open this item again, your work will continue from where you left off. Which of the following actions do not cause you to lose credit?term-5

answering a Part correctly If you click on the Continue button before finishing all the Parts, you will see a message reminding you that you need to complete each Part to get credit. If you have completed the item, clicking Continue will take you to the next item on the Assignment. At any time you may click on the Provide Feedback link to access a survey page without losing your work. Once you have completed an item, you may access your score from the assignment. Your score will display below the item title.

Videos Click on the arrow to play the video. What is shown in the video? If you can't see the video use the hints for help.

details about how to use the captions in videos in Mastering Now you know how to access the types of media you may encounter in your Mastering Assignments. If you ever have trouble viewing media in an Assignment remember that you can click Support from your Mastering login page.

If you are asked to provide a set of two or more numeric answers, separate them with commas. For example, to provide the year that Sputnik (the first satellite to be sent into orbit around the Earth) was launched and the year humans first walked on the Moon, you would enter 1957,1969 in the answer box. A rectangle has a length of 5.50 m and a width of 12.0 m. What are the perimeter and area of this rectangle? Enter the perimeter and area numerically separated by a comma. The perimeter should be given in meters and the area in square meters. Do not enter the units; they are provided to the right of the answer box.

perimeter, area = 35.0, 66.0 m, m^2