Sound Traveling in Air at 23^°C Enters a Cold Front

question 41

Multiple Choice

Sound traveling in air at 23^°C enters a cold front where the air temperature is 2^°C. If the frequency of the sound is 1500 Hz, what is the difference in the wavelength between the cold air and the warm air? The speed of sound in air at 20^°C is 343 m/s.

• A) 8.3 mm
• B) 9.0 mm
• C) 1.9 cm
• D) 6.7 cm

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Definitions:

Center Line

In statistical process control, a line on a control chart that represents the average, expected value, or mean of the process being monitored.

3-Sigma

A rule or principle in statistics indicating that nearly all values lie within three standard deviations of the mean in a normal distribution.

R Chart

R Chart, or range chart, is a type of control chart used in statistical process control to monitor the variability of a process based on samples taken from the process at given times.

Process Spread

Process spread refers to the variability within a process, often measured to assess the consistency of output over time.