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A gauge on a tyre reads 180 kPa. A student puts p = 180… | StemPy Lab
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A gauge on a tyre reads 180 kPa. A student puts p = 180 kPa into pV = nRT to find the air in the tyre. What is wrong?
Physics
Medium
High School (11–12)
Heat & Thermodynamics › Kinetic Theory of Gases
Board Exam
Created by
StemPy Lab
A gauge on a tyre reads
180
180
180
kPa. A student puts
p
=
180
p = 180
p
=
180
kPa into
p
V
=
n
R
T
pV = nRT
p
V
=
n
R
T
to find the air in the tyre. What is wrong?
The pressure must be in atmospheres
The gauge shows the pressure above the outside air, so the pressure of the air outside must be added
The gauge reading must be halved
Nothing is wrong
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