Recent content by HRubss

For the mantel, the normal would be \hat{n} = \frac{<x,y,0>}{a} and for the disks, it would be \hat{n} = \frac{<0,0,z>}{b} From those two normal, I can take the dot product of normal with the vector and get the total flux? Sorry if I'm being slow...

Oh! I see what you mean. Would I have to add two more flux bounded by a circle to the total flux?

Wow haha, this would've save me more time My apologies, it should be \overrightarrow{r} = <acos\theta,bcos\theta , z> This is from the parametric description of a cylinder. End caps? My calculus is a bit rusty, its been about 2 years since I've worked on vector calculus.

I wanted to check my answer because I'm getting two different answers with the use of the the Divergence theorem. For the left part of the equation, I converted it so that I can evaluate the integral in polar coordinates. \oint \oint (\overrightarrow{V}\cdot\hat{n}) dS = \oint \oint...

Oh! I see, because its a function of distance? So would ads = vdv be more appropriate? My "v" came from the constant acceleration formula but since it isn't constant, this will not work. The speed at A is 40 m/s? EDIT: Wait I figured it out! Since acceleration isn't constant and we're given...

Can this be moved to introduction physics homework help forum? I think its better suited for there, even though this from an Engineering Dynamics textbook. EDIT: Thank you!

Problem Statement: The motorcycle is traveling at 40 m/s when it is at A. If the speed is then decreased at v'=-(0.05s)m/s^2, where s is in meters measured from A, determine its speed and acceleration when it reaches B. I attached a picture of the problem. Relevant Equations: S = S_0 + v_0(t)...

I appreciate the time you took to post this, this is very informative!

If that’s the case, what’s your opinion on multivitamin tablets? I just looked at a bottle of multivitamins that I have (‘Opti-Men’). It says 3 tablets a day is one serving, and one serving contains 37.5 mcg of Vitamin D.

Interesting, I was taught that exercising regularly has great benefits such as decreasing LDL and then to find out that taking steroids actually increases it. I wasn’t informed by anyone about steroids, just surfing the web for quick articles. When I was in high-school, we covered the risks of...

I understand that anabolic steroids are a synthetic modification of testosterone, the natural body hormone. My question is, are the risks of taking steroids caused by defects in synthesizing the hormone or is it because of how the human body works to counteract the effects of adding more...

This graph should help you out. Of course, for water to freeze to a solid state it has be at 0* Celsius but that’s just half the puzzle. The atmospheric pressure has to be below 0.006 atm for it to go directly to a solid state instead of it at its triple point (where its solid, liquid, and gas...

I’ve had success in reading the textbook before hand and then watching online lectures from MIT OCW or professors off of Youtube if something seems to dense for me to understand. It won’t be easy since it’ll be completely based off of how much work you put in yourself. If you still don’t...

So... Substituting the entire formula: CMΔT(copper) + CMΔT(water) = -CMΔT(iron) I know that ΔT of copper and water should be the same and I want to get all the T(final) all on one side: ΔT(CM(copper) + CM(water)) = -CMT(final, iron) + CMT(initial, iron), and from here, I split up the ΔT of...

So the equation should be like this? ΔQ(copper) + ΔQ(water) = - ΔQ(iron)