Recent content by tangents

Hello all I just need to know if the procedure I'm taking is right. I need to find energy change of 1.05 Mol of KI(s) given that: I2(s) → I2(g) : 62.44 KJ/mol K(s) → K(g) : 180.4 KJ/mol 1/2 I2(g) → I(g) : 138.05 KJ/mol K+(g) + e− → K(g) ...

Sorry if this question seems like an elementary school topic but I don't really recall anyone really telling me what would happen is an astronaut took off some part of his space suit. I recall that for some reason his blood would boil (?), would he explode(literally) because of no pressure of...

yes I figured that since the height decreases, so does the radius except the problem didn't give me dr/dt or any real mention so I'm not sure how to apply it to the problem if I need to.

If you distribute before you integrte you get 6X^2-5x-6 if you integrate that you get 2x^3-(5/2)x^2-6x+c Plug in you x value to find c.

Hey guys, I'm having some trouble figuring out this problem and was wondering if someone would be kind enough to look over my work so I know that I am doing it correctly =). ------------------------------------------------------------------------- There is an open right cylinder cone that...

oh ok I get what you're saying now. Just one last question if anyone can confirm but for part D, I found the zero of the derivative to be 5.13, I know it's a minimum because the graph changes from negative to positive. So Now I plug that into my original equation like this?: y(x)=2500+Integral...

Ok for Part D I graphed S(t)-R(t). At x=0 y=-2, which doesn't make sense how much sand there is. At x=6 I get y=2.1 and x= 5.1 is a zero. But these values are too small as the original amount of sand is 2500 subic yards. Am I supposed to plug those three values into the original equation of part...

Just a few questions. The integral is S(x)-R(x) and not the other way around? also Hallsof Ivy I think you switched the values of s(t) and r(t) in parts C and D =). Thank you guys are helping me out I kind of knew what to do but just couldn't get it on paper. ^_^

Hey guys, I was doing some practice free response questions for my upcoming AP Calc AB test but was somehwhat unsure of this one. ------------------------------------------------------------------------- Sand is removed from the beach at a certain rate by this function R(t)=...

Will it work if i try to find the slope of the secant line to get the slope of the tangent line?

yeah that's basically what i did to estimate the slope at 7 but -24 just doesn't seem right

for part a, I tried to get the slope from 6-8, which is the derivative and plug in 7 but i am not sure if that;s correct because it came out to be -24.5

bump...

i don't get the whole thing

---------------------------------------------- | Distance x in cm | 0 | 1 | 5 | 6 | 8 | -------------------|-----|----|----|----|----| | Temp t(x) in °C | 100 | 93 | 70 | 62 | 55 | ---------------------------------------------- Metal wire is 8 cm. and heated at one end. distance x is how...