Answers to Selected Dimensional Analysis Practice Questions

10.) 30.0 lb/L

12.) 32,040,000 ft or 3.204 x 10⁷ ft

13.) 1.80 x 10³ yds/min

15.) 278 mg

If you would like confirmation of other answers, feel free to email Mr. Tran

Dimensional Analysis Project Links

For Background information on Olympic Medals:
www.bargaineering.com/articles/price-of-olympic-medals.html

To choose what year of the Olympics and find how many grams of each metal:
www.hesge.ch/heg/vous_etes/doc/stages/2004/sta04_schnyder_annexe1.pdf

For insight on how to solve this problem:
www.articlesbase.com/hobbies.../michael-phelps-olympic-medals-the-real-value-of-his-eight-gold-medals-526179.htm

Also, doing a Google Search on "Gold Commodity Price" will also give you a dollar amount. That is the cost per troy ounce.

Good luck!

Scientific Notation and Significant Figures Worksheet Answers

Scientfic Notation

1. 5 x 10^-3
2. 5.050 x 10³
3. 8 x 10^-4
4. 1 x 10³
5. 1 x 10⁶
6. 2.5 x 10^-1
7. 2.5 x 10^-2
8. 2.5 x 10^-3
9. 5 x 10²
10. 5 x 10³

1. 1500
2. 0.0015
3. 0.0375
4. 375
5. 220000
6. 0.335
7. 0.00012
8. 10000
9. 0.1
10. 4

Significant Figures

1. 1
2. 2
3. 3
4. 4
5. 1
6. 4
7. 6
8. 1
9. 4
10. 5

1. Over the 4 with 3 s.f.
2. Over the last 0 with 3 s.f.
3. Over the 5 with 4 s.f.
4. Over the last zero in 2.000 with 4 s.f.
5. Over the last zero with 5 s.f.
6. Over the 1 with 3 s.f.
7. Over the 7 with 2 s.f.
8. Over the last 0 with 8 s.f.
9. Over the 1 with 3 s.f.
10. Over the last 0 with 3 s.f.