Recent content by contrivance

Well, when I finished HS, my math skills were very poor. I started college with remedial math which equated to about 8th grade pre-algebra. I advanced through everything and am just about to pass University Calculus III and Physics II. I took pre-calculus while taking Intro to Physics, and I...

Thank you. So that means an electron's charge is simply a property, and not a quantity, right? Now I realize that duh - you can't have a negative quantity of something.

Homework Statement A plastic rod that has been charged to − 14nC touches a metal sphere. Afterward, the rod's charge is − 10nC . What kind of charged particle was transferred between the rod and the sphere, and in which direction? That is, did it move from the rod to the sphere or from the...

I'm 23, planning on starting my Engineering program just after a year from now. I already have an A.A. and after this semester I'll have most of my Engineering prerequisites (calc, phys, chem). So I'll be starting the 'third and fourth years' of my degree when I'm 24-25. I have had the same...

Yes. I remember deciding to get a head start on chapter one of the next course I wanted to take. Within 30 minutes, I was flipping through chapter 34 reading about something that seemed much more interesting. While I didn't get much done as far as a head start, I did get really inspired to start...

I found the 'course map', which lists the suggested courses in the suggested order. It starts from term one with Calculus I, and the next term has some English comp in there. Just seems to be missing all the typical sociology and history general educations that most students are required to...

If you got an A+ in Calc I, you should have no problem with II. Just finished Calc II with an A, and was mostly about all the different types of Integration, and Infinite Series. Smaller topics where DiffEq, Volume of Solids of Revolution. Opinions of others at my school were that Calc II was...

Homework Statement Two tuning forks, first fork has freqency of f = 273Hz. The beat frequency is 3.00Hz. What is the frequency of the second fork? Homework Equations f_{beat} = |f_1 - f_2| The Attempt at a Solution This was a question on my Physics I exam today, and my prof is...

You still need to add the 0.5 on front of your formula for KE like Curious3141 said. KE = 0.5Iω^2

Homework Statement The ceiling of a single-family dwelling in a cold climate should have an R-value of 30. To give such insulation, how thick would a layer of (a) polyurethane foam and (b) silver have to be? per my book (W/mK) k_p = 0.024 k_s = 428 Homework Equations This is Thermal...

Assuming that OP meant 3.5cm, and 2.5cm respectively; Use your equation for the Volume of Cylinder: V = \pi r^2 h So like Mark said - find the volume of the cylinder and subtract the volume of the inner 'cylinder' and then you will have the V to find your weight with. (converting cm to m)...

You have all the information you need. You're only given the distance in the x and y directions, the direction of the initial velocity (horizontal in positive x direction). Everything else is known, like the downward acceleration due to gravity which is 9.8m/s^{2}. It sounds like you've set...

This. I was training for a previous job, 40hrs/wk for 4 weeks and this is how they did the breaks. My girlfriend and I do our work in the same space (she's an artist/designer) and we follow this break schedule and it really helps. Grinding along for three solid hours without a break will...

What do you call a Mexican with a rubber toe? Roberto.

I see, this makes sense now. Well after all this stress last night I discovered I was making a calculator error. putting too much information in at once and forgetting to put parenthesis where needed to get the correct result. I see that our result isn't actually that far off from Google's and...