Recent content by adca14

wow, i feel like a moron for not seeing that! thanks!

Homework Statement A positively charged particle (9.35pC) is suspended in equilibrium in an electric field between two horizontal parallel plates with opposite charges. Each one of the square plates has a charge of 5.5x10^-5C; and are separated by 6.25mm and their sides are 11cm long what is...

I got another problem I am trying to solve for y, but when i add everything up i get + 443958, not -4.1x10^5 like the book says. P.S. how do i know which ones to add, and which ones to subtract?

yeah q3 has a negative sign. So is the way i did the problem correct?

Homework Statement Three charges, +2.5\muC, -4.8\muC & -6.3\muC are located at (-0.20m, 0.15m), (0.50m, -0.35m) and (-0.42m, -0.32m) respectively. What is the electric field at the origin? q1 = +2.5\muC q2 = -4.8\muC q3 = -6.3\muC Homework Equations a^{}2 + b^{}2 = c^{}2 v_{}x = magnitude...

I got it, the relation with the tangential speed at the edge of each wheel was what I needed. I set the tangential accelerations of both equal to each other and got it, .576, then I i used w = w0 + at and got t, 11.8s, thanks again, if it weren't for this forum, I'd be in a jam.

Homework Statement A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.0cm and accelerates at a rate of , and it is in contact with pottery wheel (radius 25.0 cm)without slipping. Calculate (a)...

thank you, I did: 3741rad*60=224,460 224,460/2*pi=35,723rpm or 36000rpm if I round up. Thanks again!

Homework Statement How fast (in rpm) must a centrifuge rotate if a particle 7.0 cm from the axis of rotation is to experience an acceleration of 100,000 g's? My variables radius= 7 cm or .07m radial accel= 100,000 g's or 980,000m/s^2 or 98,000,000cm/s^2 V= I think I need this to get w...

thank you, I forgot to convert 95km/hr to m/s too, anyways thanks again!

Homework Statement If a curve with a radius of 88m is perfectly banked for a car traveling 75km/hr, what must be the coefficient of static friction for a car not to skid when traveling at 95km/hr? Homework Equations i guess relevant equations would be tan θ = v^2/rg, but its says next to...