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Chapter 2: Problem 23
What is the product of 0.8102 \(\mathrm{m}\) and 3.44 \(\mathrm{m} ?\)
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Graphing Celsius and Fahrenheit Temperatures The graphing calculator can run a program that makes a graph of a given Fahrenheit temperature (on the \(x\) -axis) and the corresponding Celsius temperature (on the \(y\) -axis). You can use the TRACE button on the calculator to explore this graph and learn more about how the two temperature scales are related. Go to Appendix c. If you are using a TI-83 Plus, you can download the program CELSIUS and run the application as directed. If you are using another calculator, your teacher will provide you with keystrokes and data sets to use. After the graph is displayed, press TRACE. An X-shaped cursor on the graph line indicates a specific point. At the bottom of the screen the values are shown for that point. The one labeled \(\mathrm{X}=\) is the Fahrenheit temperature and the one labeled \(\mathrm{Y}=\) is the Celsius temperature. Use the right and left arrow keys to move the cursor along the graph line to find the answers to these questions. a. What is the Fahrenheit temperature when the Celsius temperature is zero? (This is where the graph line crosses the horizontal \(x\) -axis. What is the significance of this temperature? b. Human internal body temperature averages \(98.6^{\circ} \mathrm{F.}\) What is the corresponding value on the Celsius scale? c. Determine the Fahrenheit temperature in your classroom or outside, as given in a weather report. What is the corresponding Celsius temperature? d. At what temperature are the Celsius and Fahrenheit temperatures the same?
Express 743000000 in scientific notation to the following number of significant figures: a. one significant figure b. two significant figures c. four significant figures
A student measures the mass of some sucrose as 0.947 mg. Convert that quantity to grams and to kilograms.
How many grams are in 882\(\mu \mathrm{g} ?\)
Use the following terms to create a map: energy, endothermic, physical law of conservation of energy, and exothermic.
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