Recent content by jamesyboy1990

Hey Fred, - How is the term ‘isolation’ attributed to the transformers? I think it just means that you can use a transformer to isolate a power source from the load http://en.wikipedia.org/wiki/Isolation_transformer

\frac{r^{4}(pi)p}{8cl}

oooo, typo. your right, i meant force PER UNIT area. but still, any ideas on my problem?

1. Homework Statement where: l = the length of the tube in cm r = the radius of the tube in cm p = the difference in pressure of the two ends of the tube in dynes per cm2 c = the coefficient of Viscosity in poises (dyne-seconds per cm2) v = volume in cm3 per second pi =...

Homework Statement \frac{r^{4}p(pi)}{8cl} where: l = the length of the tube in cm r = the radius of the tube in cm p = the difference in pressure of the two ends of the tube in dynes per cm2 c = the coefficient of Viscosity in poises (dyne-seconds per cm2) v = volume in cm3 per...

i remember in grade 6 my friend and i did a project on different types of insulation. With a lightbulb as a heat source, we got the temp of a cardboard box up to 280 degrees Celsius

honestly, the only question i wanted answered was in respect to the set up to the lab. Once you process enough data to prove/disprove the purpose of the lab, do you have to do any more processing, or can you just go straight to conclusion/evaluation?

no, because the greater mass wouldn't stay static at the certain angle, so it would decrease. if i am trying to prove that the coefficient should stay the same, and it doesn't in my experiment, do i have to do more, or can i just stop once the graph shows that the coefficient changed?

but since tanx = u, so why should it matter whether you plot u vs. m or tanx vs m?

technically, all i need to know is whether i would have to process the graph to find a relation between weight and the coefficient (although i know that technicallly the coefficient is independant of mass) if all i wanted to prove in the lab was that the coefficient was independant of mass (and...

R = mg cosx F = mg sinx so in essence, the coefficient was tanx

i had an incline, measured the weight of the mass, and changed the angle such that if i increased the angle by a little bit, the mass would slide. I did this for several different masses and recorded the angle. I then used a freebody diagram and the equation for static friciton (u = Fmax/R)

Homework Statement hi, i am almost done my lab on the coefficient of friction on an inclined plane. I was attempting to prove that the coefficent of static friction would be the same no matter the weight of the mass that was static on the incline. However, i plotted a coefficient versus mass...

oh yeah, and since this is my first time ever participating in this forum, please tell me if I'm missing anything

Homework Statement Ok hi. I have this reaction for a lab due in about 2 weeks. It is on the preperation of bromine gas. The exact reaction was assigned (which is why i didn't choose a less-complex method, such as 2KBr + Cl2 --> 2KCl + Br2). My problem is that i need information (ie. internet...