Recent content by cd80187

I set it up as 10 kV/mm = x/180mm. And the length of the cylinder is 18cm, the thickness is .34 cm.

What formula should I be using for this then? I tried just using a simple proportion, but it didn't work out

You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 9000 V. You think of using the sides of a tall plastic drinking glass as a dielectric (with a dielectric constant 5.0 and dielectric strength 10 kV/mm), lining the inside and outside...

You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 9000 V. You think of using the sides of a tall plastic drinking glass as a dielectric (with a dielectric constant 5.0 and dielectric strength 10 kV/mm), lining the inside and outside...

Homework Statement The pilot of an airplane, carrying a package of mail, wishes to hit recovery location A. Assume that the plane is traveling at constant speed of 200 km/hr at a constant height of 100m above the ground. What angle theta with the horizontal should the pilot's line of sight...

OK, I'm not sure about this, but shouldn't everything cancel out, except for the one line that is perpindicular to the x axis? (aka the y-axis line). So then could I just use a point charge equation of (1/ 4pi x permitivity constant) x (q/r squared). But I have no clue how to integrate it, or...

In Fig. 22-41, two curved plastic rods, one of charge +q and the other of charge -q, form a circle of radius R = 3.28 cm in an xy plane. The x-axis passes through both of the connecting points, and the charge is distributed uniformly on both rods. If q = 11.8 pC, what is the magnitude of the...

In Fig. 12-49, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of the cylinders are related by AA = 2.4 AB; the Young's moduli of the cylinders are related by EA = 2.2 EB. The cylinders had identical lengths before the brick was placed on them. What fraction of...

I was able to solve the first part, but I could not get the second part. The book gives us two equations, and I think I am supposed to use this one : omega (w) = Square root of (k/m - b squared/4msquared). But beyond that, I am unsure what I am supposed to do

Yeah, I got the question right, I realized that I was forgetting to cancel out the square root. Thank you for the help

A simple harmonic oscillator consists of a block of mass 2.60 kg attached to a spring of spring constant 380 N/m. When t = 2.30 s, the position and velocity of the block are x = 0.148 m and v = 4.080 m/s. (a) What is the amplitude of the oscillations? What were the (b) position and (c) velocity...

In Fig. 15-46, a stick of length L = 1.8 m oscillates as a physical pendulum. (a) What value of distance x between the stick's center of mass and its pivot point O gives the least period? (b) What is that least period? For this problem, I wasn't sure where to start, I would have thought that...

The suspension system of a 1700 kg automobile "sags" 13 cm when the chassis is placed on it. Also, the oscillation amplitude decreases by 43% each cycle. Estimate the values of (a) the spring constant k and (b) the damping constant b for the spring and shock absorber system of one wheel...

But just to ensure, I find v using the m x g = m(v squared)/ R, and then using that, I will use the equation m x g x h = (m g h) + .5 m (v squared) + (.5 (I)(v/r)squared? And I = m (rsquared), correct?

Thank you very much for the help