QQuestionPhysics
QuestionPhysics
Which SI unit is used to measure atmospheric pressure?
A. Kilopascal (kPa)
B. Millimeters of mercury (mm of Hg)
C. Kelvin (K)
D. Inches (in)
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Answer
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Step 1:I'll solve this problem step by step following the specified LaTeX formatting guidelines:
Step 2:: Understand the Question
The problem asks about the SI (International System of Units) unit for measuring atmospheric pressure. We need to identify which of the given options is the correct SI unit.
Step 3:: Analyze the Options
Let's examine each option: - A. Kilopascal (kPa) - B. Millimeters of mercury (mm of Hg) - C. Kelvin (K) - D. Inches (in)
Step 4:: Identify the SI Unit
- Kilopascal (kPa) = $$1 \times 10^{3} \mathrm{Pa}
The SI unit for pressure is the pascal (Pa), with kilopascal (kPa) being its standard derived unit. - This is the standard SI unit for measuring pressure, including atmospheric pressure
Step 5:: Eliminate Incorrect Options
- Millimeters of mercury (mm of Hg) is a non-SI unit - Kelvin (K) is a temperature unit, not a pressure unit - Inches (in) is a length unit, not a pressure unit
Step 6:: Confirm the Correct Answer
The correct SI unit for atmospheric pressure is kilopascal (kPa).
Final Answer
Kilopascal (kPa)
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