091609_problems(2)

091609_problems(2) - x x = 2.29 mi A JUST FOR FUN PROBLEM...

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1 To pay for your CHEM 101 book, you’re working at a fast food restaurant wrapping hamburgers. Each hour you wrap 184 hamburgers. You work 4 hours per day and 2 days per week. You get paid every 2 weeks with a salary of $78.40. How many hamburgers will you have to wrap to pay for your book? $ 213.50 $ 78.40 2 weeks 1 week 2 days 1 day 4 hours 1 hour 184 hamburgers x x x x = 8 x 10 3 hamburgers A JUST FOR FUN PROBLEM!! You are standing on the golf course having the best game of your life. All of a sudden you hear the sound of thunder. It occurs to you that people have been hit by lightning on the golf course – maybe you should go home, but you’re having a great game. What to do? You observe a flash of lightning and begin to count the seconds until the sound of thunder – 10.5 seconds. You remember from CHEM 101 that sound travels at 1153.98 ft/s on a 92°F day.
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2 THE ANSWER!!! Given: 10.5 seconds 1153.98 ft 1 mi 1 s 5280 ft The storm is 2.29 miles away! 10.5 s
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Unformatted text preview: x x = 2.29 mi A JUST FOR FUN PROBLEM!! It’s 3:00 pm and you are told by your parent to cut the 1.00 acre plot of grass with the new 22.000” John Deere mower. Dang! Hot date at 6:00 pm. If you mow at a rate of 2.00 mph, can you make your date? 1 acre = 43,500 square feet 1 mile = 5280 linear feet 3 THE SOLUTION!!! How long does it take to cut a single pass of length l? 208.57 ft x x = 1.97 51 x10-2 hr 1 acre = 43,500 square feet l 2 = area or l = (43500 ft 2 ) ½ = 208.57 ft l 2.00 mile 1 mile 5280.0 ft 1 hr How much grass is cut in a single pass? 208.57 ft x 22.000 inch x = 3.8237 83 x10 2 ft 2 12 inch 1 foot THE ANSWER!!! Each single pass takes 1.9751x10-2 hr and cuts 3.8238x10 2 square ft . 1 acre = 43,500 square feet l 2 = area or l = (43500 ft 2 ) ½ = 208.57 ft l How long does it take to cut the entire plot? 43,500 ft 2 x = 2.25 hr 1.97 51 x10-2 hr 3.8237 83 x10 2 ft 2...
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This note was uploaded on 07/10/2011 for the course CHEM 101 taught by Professor Taracarpenter during the Fall '08 term at UMBC.

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091609_problems(2) - x x = 2.29 mi A JUST FOR FUN PROBLEM...

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