Recent content by geomajor

Homework Statement A shot putter launches a 7.22 kg shot by pushing it along a straight line of length 1.84 m and at an angle of 33.0° from the horizontal, accelerating the shot to the launch speed from its initial speed of 2.3 m/s (which is due to the athlete's preliminary motion). The shot...

The key here is magma differentiation. Alkali-rich rocks are plutonic, meaning they formed within the Earth's interior (i.e. magma chambers) from a magma of a certain composition. There are three basic types of magmas: basaltic, andesitic, and rhyolitic. Most magmas start out as silicic basalts...

Yeah, it's the full question. I asked a chem major about it and they said blood is heterogeneous because the blood cells can be separated from the plasma. That made sense to me...

Yeah, I finally came to that conclusion last night...blood is heterogeneous. But what about dry ice- is it considered a pure substance even though it's frozen carbon dioxide, or is it a solution of carbon and oxygen atoms??

Homework Statement Classify each of the following as a pure substance, solution, or heterogeneous mixture: a) blood b) dry ice c) krypton gas d) a rusty nail e) table salt f) glass of lemonade Justify your answers. Homework Equations No equations obviously...The Attempt at a Solution Here's...

oh duh! 2 not 1/2! I don't know what I was thinking...

Okay, so I have 1/(3x-1) + 2/(x+1) when I went through and did all the work, I got this (1/2)\sum(-1)^n(x)^n - \sum(3)^n(x)^n Now when I put them together would I get ... (-1/2) \sum[(-1)^n -(3)^n]x^n ...? I'm not sure about that 1/2 thing... because I'm not sure if 2/(1+x)...

1. Express the function as the sum of a power series by first using partial fractions. Find the interval of convergence. f(x)= (7x-1)/(3x^2 +2x-1) 2. using the fact that 1/(1-x) =\sum from \infty to n=0 of x^n and the interval for convergence of that is (-1,1) 3. I know that...

Thanks! In the end my work finally came together and made sense-yay! :)

Hi, I have the exact same problem--finding the surface area of y=cos(2x) from 0,\pi/6 rotated about the x-axis. I already did the substitution and trig substitution to get rid of the square root. But now I'm left with \pi \intfrom 0, pi/6 of sec^3 of \theta d\theta. I want to go back at the...