/sci/ - Science & Math

>>4221268
>EK is a mod
well, that would explain why she isn't permab&

ok, so I have the rest of my lab completed, but my notes are not clear on this. our task was to find the latent heat of vaporization when we placed a sample of aluminum into a sample of liquid nitrogen. since liquid nitrogen vaporizes at room temperature anyway, you establish a rate of vaporization without the metal and then with it. all masses are known, and i have the slopes for with and without the metal, as well as the initial temperature of the metal, and its specific heat. how do i find the latent heat of vaporization for the liquid nitrogen sample?

Some can get r(t)?
From this:

d r(t)/dt= B* 1/r(t)


B is a constant.

I'm meant to prove that <div class="math">cos^2 z + sin^2 z = 1</div>

z is a complex number. I have no clue about how I can do this. What should I begin with?