in the backseat of that honda

duylinh's plans to be a shock blogger:

"i'll say something that will get me a lot of comments. that people will get riled up. like today, i slaughtered a pig. i cut its throat slowly. i like how it screams like a child. then the people who comment, they'll be upset, but they'll be my most faithful readers."

"pigs have stout necks and thick skin, and they can put up a great fight. no one would believe this."

"you can comment that, but then i'll just say i injected it with novocaine"

"novocaine will numb the pig but it will still be alert, and not feeling pain, will writhe all the more."

"you can't comment on my new blog."

this morning: cement slurry is poured into an annular space between a tubing (OD = Dt) and a casing (ID = Dc). it hardens in an exothermic reaction with constant heat production per voume, N. the cement takes time tset to harden. the casing and the tube remain at a constant temperature, Tres. find the radial position of the maximum temperature for
a) long tset
b) short tset
how do they compare?