## SPM 2006, Paper 1, Question 23

### SPM 2006, Paper 1, Question 23

The air pressure in a car tyre is 200kPa at a temperature of 25oC. What is the air pressure in the tyre at a temperature of 37oC?

I use P1/T1 = P2/T2, but my answer is 296 kPa, but the answer given is 208kPa. Is the answer wrong?
BlueSky
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### Re: SPM 2006, Paper 1, Question 23

BlueSky wrote:The air pressure in a car tyre is 200kPa at a temperature of 25oC. What is the air pressure in the tyre at a temperature of 37oC?

I use P1/T1 = P2/T2, but my answer is 296 kPa, but the answer given is 208kPa. Is the answer wrong?

Had you changed temperature to kelvin ?
$(\theta + 273)K$
Be thankful.

work_tgr
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Location: Sarawak

### Re: SPM 2006, Paper 1, Question 23

use Kelvin for temperature.

P1/T1 = P2/T2
200k/298 = P2/310
P2 =208.05kPa
hertz
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