Molecular Speeds: an Ideal Gas Is Kept in a Rigid

question 115

Multiple Choice

Molecular speeds: An ideal gas is kept in a rigid container that expands negligibly when heated. The gas starts at a temperature of 20.0°C, and heat is added to increase its temperature. At what temperature will its root-mean-square speed (thermal speed) be double its value at 20.0°C?

• A) 40.0°C
• B) 141°C
• C) 313°C
• D) 400°C
• E) 899°C

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Definitions:

MEGGER

A brand name that has become a generic term for insulation resistance testers, which measure the resistance of electrical insulation.

Ohmmeter

A device used for measuring electrical resistance in ohms.

Resistance

The opposition to current flow in an AC or DC circuit.

Derate

To reduce the rated capability of electronic components or electrical devices due to environmental conditions or other factors.