Activity_3_Name_taken_off.docx

Activity_3_Name_taken_off.docx - Activity 3 Problem Solving...

• Homework Help
• 13

This preview shows 1 out of 4 pages.

Activity 3 Problem Solving Learning Objectives : Upon completion of this activity, students will: 1. Master the use of unit conversion in solving problems 2. Learn how to convert from one set of units to another. 3. Become familiar dimensional analysis or the unit factor method Mathematics is essential to science; often call the language of science. Dimensional Analysis is a process that is used to help solve problems in science. Unit conversion is required because all quantities in a problem must have units belonging to the same system. Unit conversions are required in many problems involving physical quantities. Engineers, health professionals, biologists and other scientists find unit conversion a necessary part of their jobs, and in everyday life, measures of volume commonly need to be converted, e.g. cups to pints, tablespoons to teaspoons, liters to gallons. Dimensional Analysis, Unit Analysis or Factor Label method Solving Problems using units. Units may be used as guide in solving problems. First determine what units you are given initially, then decide what units are needed to solve the answer. Finally the unit conversion factors will take you from the given units to the units needed in the final answer. If the units cancel out properly, chances are you are doing the right thing!. The basic setup is Sometimes the path from what given unit to the needed unit cannot be completed with one simple unit factor. Unit factors or equivalences are added until the new units are the same as the units needed to solve the problem. Each unit factor has a denominator equivalent to the numerator but in different units. For example, convert 10 feet (ft) to meters (m). If we know that 12 inches is equivalent to 1 foot, we can write the equivalence as 12 in = 1 ft and the unit factor as We can solve for the answer by setting up the following string of conversion factors using several other equivalences (2.54 cm = 1 in; 100 cm = 1 m) : 10.00 ft 1 × 12 . 1 ft × 2.54 cm 1 . × 1 m 1 cm = 3.05 m If I had known different equivalences, the problem can still be solved using the same process. Notice that in each successive unit factor, the units in the denominator cancel the unit in the numerator. The rules for significant figures should be used to determine the final answer. Page 1

Subscribe to view the full document.

Activity 3 Page 2
Activity 3 Activity 3 Name ______ Part I. Problem Solving Model: Problem Solving Methodology Applied to Unit Conversion You have 50 dollars in quarters; how many quarters do you have?

Subscribe to view the full document.

You've reached the end of this preview.
• Fall '14
• Harris
• Dimensional Analysis, Orders of magnitude, Conversion of units, Inch, dimensional analysis problems

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern