# Answer each of the following questions in your own words. Do not copy and paste or retype the questions themselves into your document, as this will…

Answer each of the following questions in your own words. Do not copy and paste or retype the questions themselves into your document, as this will cause unreliable results at Turnitin.com. Simply provide the answers.

1. The most destructive earthquake is Japan’s history (Links to an external site.)Links to an external site. took place near Honshu in 2011. It was a magnitude 9 earthquake. Some of the aftershocks were magnitude 7. How many times more energy was released by the magnitude 9 earthquake than by the magnitude 7 aftershocks?
2. How many times louder is a jackhammer than a washing machine if a jackhammer produces a 120 dB sound and a washing machine produces an 80 db sound?
3. According to an article on Fireworks and Hearing Loss (Links to an external site.)Links to an external site., “Any noise above 85 dB is considered unsafe. Most firecrackers produce sounds starting at 125 dB.” Some Category 2 fireworks (sometimes called “garden fireworks”) produce a sound intensity of 125 dB 0.5 meters away from the ignition site. Based on this information, what is the minimum distance friends and family should stand away from the ignition site to be at a safe hearing distance?

You may use ideas from the discussion board, but you are expected to write your solution using your own words to explain your reasoning. The report should be no more than 3 pages.

Keep the following in mind to maximize credit for your write-up:

1. Review the rubric your instructor will use to score your work. (See Evaluation Criteria below).
2. Answer all parts of the problem.
3. Write your solution in your own words. Show your justification for every step in your solution, using clear, mathematically accurate language. You can use phrases to explain your reasoning from step to step, but clearly state your final conclusions using complete English sentences (for example, “Jill needs to add 43 gallons of water to her pool”).
4. Label all numbers with the units they represent (e.g., 0.3048 ft/meter).
5. Type your write-up in MS Word and try to use the Equation Editor so that your equations are clear.The video How to use Equation Editor in Microsoft Office (Links to an external site.)Links to an external site. is a good tutorial. For this course, it is sufficient to watch segments 0:00-5:00 and 9:50-12:00. Don’t forget how to cancel units in Word, which was explained in Module 1.
6. If you cannot type your equations, you may hand-write the mathematics in dark ink, scan your paper, check for legibility then upload your work.

Check your work and correct any spelling or grammatical errors. When you are ready to submit your work, click “Submit Assignment” in the upper right corner. Click on “Browse,” browse your computer, and select your file. Click “Open” and verify the correct file name has appeared next to the Browse button. Enter your comments, if any, in the Comments area. Click on “Submit Assignment.”

Turnitin

This course has Turnitin fully integrated into the course dropbox. This means that you should only submit your assignments to the dropbox below. Please do not submit your assignment directly to Turnitin.com.

Evaluation

This assignment will be graded using the Mathematics Problem Solution Grading Rubric located on the Course Rubrics page within the Start Here section of the course. Please review the rubric prior to beginning your work so that you ensure your submission meets the criteria in place for this assignment. This assignment is worth 25% of your final course grade.

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