Which term expresses pressure and is abbreviated PSI?

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Multiple Choice

Which term expresses pressure and is abbreviated PSI?

Explanation:
Pressure is a measure of force per unit area, and there are several units used to express it. PSI stands for pounds per square inch, a unit commonly used in the United States for things like tire pressures. It is the term that directly matches the idea of a pressure unit and is abbreviated as PSI. The other options express pressure in different units: bar is a metric unit equal to 100,000 pascals; pascal (abbreviated Pa) is the SI unit; and N/m^2 is just another way to write pascal. So the reason PSI is the best answer is that it is the specific unit of pressure that is exactly abbreviated as PSI.

Pressure is a measure of force per unit area, and there are several units used to express it. PSI stands for pounds per square inch, a unit commonly used in the United States for things like tire pressures. It is the term that directly matches the idea of a pressure unit and is abbreviated as PSI. The other options express pressure in different units: bar is a metric unit equal to 100,000 pascals; pascal (abbreviated Pa) is the SI unit; and N/m^2 is just another way to write pascal. So the reason PSI is the best answer is that it is the specific unit of pressure that is exactly abbreviated as PSI.

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