/sqt/ - Stupid Questions Thread

>>8458595
Why is algebraic geometry so boring

>>8458595
200 page book is 200$. Kek

If a closed thermodynamic system that measures 273.15 K gets heated by 26.85 °C, what temperature does it become?

>>8458684
>convert to kelvin
>add up
>???
>ta daaaa

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So I've been doing some thermodynamics problems, and this one asks me to calculate work done from isothermal expansion of a Van der Waals gas.

I understand the concept and I know my approach is correct, but I feel I'm fucking up the integral somewhere because apparently my answer is incorrect.

>>8458684

Kelvin and Celcius have equivalent unitary changes

>>8459083
Shoudn't the work be negative as the gas is expanding?

>>8459083
I can't tell if you converted your units correctly, and did you forget to multiply by the temperature in the end?

If I'm measuring the torque to start a lawn mower, do I need to measure anything besides the radius of the pulley?

The moment of inertia of the thing you are spinning?

>>8459175
Oh yeah, the first time round I forgot to multiply by Temperature and got something like 30J, which was even more ludicrous.

>>8459141
...Holy shit you're right. It's frankly shameful that I'm using engineering conventions as a physicist.

>>8459256
Nah that happens. Sometimes my derivatives of x^2 are x^2 and other silly mistakes that accumulate and end up costing semesters.

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what would an intro to signal processing class be like /sci/?

>>8458595
You ever put a dick in that baby?

>>8459410
Fourier Analysis