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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Markings to indicate length are placed on a steel tape in a room that is at a temperature of 22°C. Measurements are then made with the same tape on a day when the temperature is 27°C. Are the measurements too long, too short, or accurate?

To determine
The measurements on the steel tape.

Explanation

As the temperature increases, materials start to expand. This is because the atoms vibrate about their mean positions.

The change in length with respect to the original length is,

ΔLL0=αΔT

  • ΔL is the change in length.
  • L0 is the original measured length.
  • ΔT is the change in temperature

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