Homework answers / question archive / Concordia University PHYS 273 LESSON 9 1)A tankless hot water heater is more efficient than a hot water tank because… T or F: Energy efficient light bulbs are about 50%more efficient than standard light bulbs

Concordia University PHYS 273 LESSON 9 1)A tankless hot water heater is more efficient than a hot water tank because… T or F: Energy efficient light bulbs are about 50%more efficient than standard light bulbs

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Concordia University

PHYS 273

LESSON 9

1)A tankless hot water heater is more efficient than a hot water tank because…

2. T or F: Energy efficient light bulbs are about 50%more efficient than standard light bulbs.
3. When heat is transferred between two objects in contact with each other, the process is called…
4. T or F: A good home insulation will not be good at transferring heat.
5. T or F: All electric heating systems do not depend on fossil fuels for energy production.
6. A heat pump uses electricity…
7. If a 100W light bulb produces 3W of visible light, 60W of heat, and 37W of invisible radiation, what is its efficiency?
8. When heat is transferred by light being emitted or absorbed, the process is called…
9. In Canada most of our residential energy use is consumed through…
10. When heat is transferred through the macroscopic movement of fluids, the process is called…
11. The standard that certifies energy efficient products is called…