Category Archives: Measurement
Fermi Questions
2008 GCE A Level Physics Paper 1 Question 2
Which estimate is realistic?
A. The kinetic energy of a bus travelling on an expressway is 30 000 J.
B. The power of a domestic light is 300 W.
C. The temperature of a hot oven is 300 K.
D. The volume of air in a car tyre is 0.03 m3.
Measure a Foot
One of the experiments that I did for the topic of Measurement when I was lecturing in a JC was to try to verify this claim that our feet usually swell at night. It has been stated in some websites, such as Answers.com that "Often, your feet will swell in the latter part of the day."
