PHY 1010 Activity 10: Chapter 11 Energy in Thermal Processes
For all problems, you must draw a diagram & show your work unless otherwise noted.
1. Convert the following from calories to joules or vice-versa.
a.
b.
c.
d.
e.
f.
2. What is the difference between the unit of Calories measured in the food you consume, and the unit of calories measured in the heat energy you produce as a result of this food you consumed?
3. Why does the insulation in your home help you in both the winter & the summer to keep warm & stay cool, respectively?
4. How does a thermometer measure the temperature of something (body, system, environment)?
5. Why do incandescent lights produce more heat than fluorescent lights? (Hint: Use Stefans law to explain your answer. Stefan-Boltzmann constant )
