QQuestionPhysics
QuestionPhysics
A car driver measures a tire pressure of 220 kPa. What is the absolute pressure in the tire?
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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 Concept of Absolute Pressure
Absolute pressure is the total pressure measured from absolute zero (complete vacuum). It is calculated by adding standard atmospheric pressure to the gauge pressure.
Step 3:: Identify the Given Information
- Gauge pressure = $$220 \text{ kPa}
- Standard atmospheric pressure = 101.325 \text{ kPa}
Step 4:: Calculate Absolute Pressure
P_{absolute} = 220 \text{ kPa} + 101.325 \text{ kPa}
Absolute pressure = Gauge pressure + Atmospheric pressure
Step 5:: Perform the Calculation
P_{absolute} = 321.325 \text{ kPa}
Final Answer
Key Insights: - Absolute pressure always includes atmospheric pressure - Gauge pressure measures pressure above atmospheric pressure - Standard atmospheric pressure is typically 101.325 \text{ kPa}
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