Stefan-Boltzmann Law - thermal radiation
Tuesday, July 24, 2007
This is a mini-lecture on the Stefan-Boltzmann Law. This is how an astronomer can figure out approximately how many GigaWatts of power a star produces in thermal radiation. You have to analyze the
Wien Law - when stuff gets red hot etc.
Tuesday, July 24, 2007
Mini-lecture on the Wien Law. This is how an astronomer can analyze the light of a star light years away and figure out its surface temperature.
Brain burner: melt aluminum, ex. 21, p. 267
Tuesday, July 24, 2007
This is a great exercise, but definitely a toughie. What is the sequence of events when one melts a solid, like a 3 kg block of aluminum? How much energy is required?
Calculation of nothing, ex. 39, PSM p. 113.
Tuesday, July 24, 2007
This is a problem about nothing.
I.e., you compute the size of a hole in a steel plate, from the problem solving manual (PSM).
Railroad track expansion, ex. 24, p. 267
Tuesday, July 24, 2007
Basic exercise in thermal expansion. When this happens to train tracks, if there are no expansion joints, it can twist the rails and cause trains to derail.
Hot liquid heats up cooler liquid, ex. 15, p. 267
Tuesday, July 24, 2007
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From PSM, light bulb problem, #6, p. 111
Tuesday, July 24, 2007
This exercise shows the equivalent heat generated by a normal human being. It is from the problem solving manual, p. 111.
Underwater effective weight of Au, ex. 23, PSM p. 104
Wednesday, July 18, 2007
Why do objects suddenly feel lighter when they are submerged?
The yellow mystery object, ex. 22, p. 246
Wednesday, July 18, 2007
Buoyancy wins and loses in this CSI episode.
Submerged forces, ex. 24, p. 246
Wednesday, July 18, 2007
Buoyant forces and weight force compete against each other for submerged objects.
HW podcasts
These visual podcasts are supplements to some of the homework assignments.
