Recent content by 314Jason

Ok then, thanks!

So because n > 1 is in both equations, this is true?

I got (b)! I can just public the sides into the cos rule and rearrange to find theta. The n should cancle out. Does anyone know how to do (a)? Please?

Homework Statement A triangle has sides of length (n2+n+1), (2n+1) and (n2-1), where n > 1. (a) Explain why the side (n2+n+1) must be the longest side of the triangle (b) Show that the largest angle, θ , of the triangle is 120º. Homework Equations In a triangle of sides a, b...

Sorry, I'm just trying to write an explanation to how I came up with the theoretical value (the red line). So you just look at the trend lines from the values in post #10? How do I use the stuff we did earlier with Ohm's law to explain this?

Hi, I tried plotting my actual values on the 1/U_v and 1/n axis: I'm still not sure I understand your graph explanation. But if I know the gradient, then I can plot a line using the points (1/5, 1/0.92) and get something like this: So we can use this line to find the theoretical value...

I'm sorry :( I still don't understand how we can use that to find U. What do I do with the graph?

Ohh ok I get it now :) So, if I expand the "R" and neglect the R_s, I would have: U = [(R_v + R_b/n)U_v ] / Rv But how would I know R_b? Or do I just use n = 1,2,3,4,5 and plot five lines with R_b on the x-axis?

Thank you so much DrDu! I understood everything up to Also, how would I know what R_V and R_b is? Why did you arrange to find U, not U_v? Isn't U_v the value on a volt meter we want to find out?

This is my set-up: And I'm sorry, I read the wrong scale thing again. It's not mA, its in V, and the averages are: 0.700 0.900 0.902 0.910 0.920

Hi, sorry I haven't replied in a long, long while. Borek, yes I was reading the wrong scale :P The real averages are: 1 layer filter paper 0.1400 mA 2 layer filter paper 0.1800 mA 3 layer filter paper 0.1804 mA 4 layer filter paper 0.1820 mA 5 layer filter paper 0.1840 mA I understand...

I don't know what that means :( But I'm using something like http://images.wikia.com/schools/images/0/05/Newvoltmeter.jpg. One's connected to the black and the other one's connected to the nearest red (I believe that's 0-3 V).

I did an experiment testing the thickness of a salt bridge (made of filter paper soaked in potassium nitrate) on the voltage produced from Zn and Cu half cells. This is similar to a thread someone made back in 2007. But I have no idea how to explain my findings or whether the thickness...

I'm trying to prove a statement using as many different methods as posible. I heard long ago that this is a type of proof, but I don't know what to call it! For example: In a triangle ABC denoted by (equation with variable n), as n increases, the length of BC decreases. So I've used...

Hi! Sorry for the late reply, I've been busy completing a ton of assignments. I talked to my teacher about proving the conjecture and he said he expects me to use mathematical induction, and that its the "best, valid proof". I just have no idea how I could apply that here. According to this...