# Physics Dimensional Analysis

Show your work and explain your answers.  Write your answers on a separate sheet(s) of paper.  It must be neat and legible.  When you are done, save your file as a PDF.  You can also scan in your work or use a smart phone or digital camera to take a photo of your work and save it as a PDF or JPG file.  Attach your file and submit it below.
1. The speed of sound in air is 767 miles per hour.  Use unit conversions to determine:  a) the speed of sound in meters per second  b) the speed of sound in kilometers per hour, and  c) the speed of sound in feet per minute.
2. A basketball court is 4,700 square feet.  Use unit conversions  to determine:  a) The area in square meters  b) the area in square inches, and c) the area in acres.
3. A bucket has a base with a diameter of 8.0 in.  How high do you need to fill the bucket to get 2.0 L of water?
4. Density (p) has units of kg/m3.  Area (A) has units of m2.  Mass (m) has units of kg.  Height (h) has units of m.  Use dimensional analysis to determine which of these equations can be used to calculate the height of a object and which cannot.
a)
b)
c)
d)
5. The equations that relates length (x), time (t), and acceleration (a) is x = 1/2 a t2.  If length is in units of meters (m) and time is in units of seconds (s), use dimensional analysis to determine the units of acceleration.
6.  Describe an example of an application of a unit that you might see in your future career.  List the object being measured, the property, and the units (including any prefixes).  Do not use any examples from the textbook or lecture.

• 9 days ago
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