Recent content by Swagger

I assumed they were the same sense it says "A positive charge is uniformly distributed over the volume of the sphere". If they are not, how do I find out the charges?

I don't understand those formulas, we learned E=2kQin/rL. Was my approach the wrong way of doing it. Finding Qin and then using E=2kQin/rL to get the answer.

I did. The charge in the center in postitive so the direction on the e-field is positive along the x-axis, right?

I don't understand

A plastic pipe has an inner radius of a = 35.00 cm and an outer radius of b = 71.00 cm. Electric charge is uniformly distributed over the region a < r < b. The charge density in this region is 30.00 C/m3 A)Calculate the magnitude of the electric field at r = 0.44 m. B)Calculate the...

A positive charge Q = 1400.00 C is uniformly distributed over the volume of a sphere of radius R = 10.00 m. Suppose a spherical cavity of radius R/2 is cut out of the solid sphere, the center of the cavity being a distance R/2 from the center of the original solid sphere (see figure). The...

ok...so here is something I tried. F(q)=1.834E14 N Fcos45+Fcos45+Fcos45+F(Q)=0 F(Q)=-(Fcos45+Fcos45+Fcos45) I get the distance from big Q to little q to be 0.054447m=r. I then plug in the F(Q) and r into F=k*q*q/r^2 I get -11.66C is this correct?

oh and to answer your question...is it -1.83E14N?

I got the force of the small q by using F=k*q*q/r^2 I'm still not sure what to do. Do I multiply the small q Force by 4 and use the same quation to get the charge for big Q?

Find the charge Q that should be placed at the centre of the square of side 7.70E+0 cm, at the corners of which four identical charges +q = 11 C are placed so that the whole system is in equilibrium. (picture attached) I know that the sum of all the forces must equal zero. I also figured...

Two identical balls of mass 38 g are suspended from threads of length 1.5 m and carry equal charges of 16 nC as shown in the figure. Assume that θ is so small that its tangent can be replaced by its sine and find the value of x. (picture attached) I know that the sum of all the forces must...

A ladder consists of two legs, AB and BC, that are pinned at joint B and held together by a massless wire between D and E. The two legs are uniform and have the same length (so the ladder forms an isosceles triangle), but the legs have unequal masses. The heavier of the two legs, BC, has a mass...

UGH! That was it...I got it. Thanks!

All angles a 90deg, that would just be multiplying by 1, right? Also, is my F3 torque correct? I did .004 * 6.1

A uniform 2.9-kg cylinder can rotate about an axis through its center at O. The forces applied are: F1 = 2.4 N, F2 = 3.9 N, F3 = 6.1 N, and F4 = 4.6 N. Also, R1 = 11.2 cm and R3 = 4.0 cm. Find the magnitude and direction (+: counterclockwise; -: clockwise) of the angular acceleration of the...