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Author Question: Explain what causes the mercury in the glass thermometer to rise and fall with a change in ... (Read 190 times)

clmills979

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on: Jul 28, 2018
Explain what causes the mercury in the glass thermometer to rise and fall with a change in temperature.

Question 2

A metal wire of resistance R is cut into three equal pieces that are then placed together side by side to form a new cable with a length equal to one-third the original length. What is the resistance of this new cable?
  1. 1/9 R
  2. 1/3 R
  3. R
  4. 3R
  5. 9R


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fauacakatahaias

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Reply #1 on: Jul 28, 2018
Answer to Question 1

The mercury expands or contracts in volume when heat energy is added to or taken
from the mercury and this causes its heat to vary in the thermometer.

Answer to Question 2

1


clmills979

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Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

phuda

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Reply 3 on: Yesterday
Excellent

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