Recent content by quaticle

Awesome thanks a lot, using these ideas I was able to obtain the correct answer!

And this can be done using Ω = 2π(1-cos(θ)) ? This will give me the solid angle of the cone and then I divide that by the total sr of a sphere (4π) to obtain the fraction of the whole through which the flux I need flows...

I am not sure what a steradian is, but a quick google search tells me 4π steradians are in a sphere. Do I then multiple the fraction by 4π?

The fraction of flux we are interested in goes through θ°/360°, right? So find the total flux like one normally would then find that fraction of it?

I wasn't sure if the h (height) variable was needed since the portion I am supposed to calculate the flux through is a flat area on the surface of the sphere. I wasn't sure how to find the area of that, and through searches found Archimedes' formula shown in the op. I just re-calculated and when...

Homework Statement A sphere of radius R = 1.40 m surrounds a particle with charge Q = 42.0 μC located at its center as shown in the figure below. Find the electric flux through a circular cap of half-angle θ = 28.0°. Homework Equations Φ = ∫E⋅dA E = (kq)/r2 A = πa2 where a = rsin(θ) --> from...

Oh I completely forgot the g term, and of course the conversion! Thank you for the help, once I take those two into consideration I do obtain the desired answer. Just to reiterate and reinforce my understanding... here the buoyant force is the difference in the tensions? i.e the amount force...

. When I rearrange terms to solve for the volume though I end up with the same equality I had in the original post.

So the tension in the string if in air would simply be the mass of the ball * gravity. The tension when submerged is given to me (0.8N). I am given the correct answer for the volume of the ball as 12cm3. Using my final equality my answer is something on the order of 10-5... Going off what you...

I am only given the density of the ball, which is iron (7.87e3 kg/m3).

Homework Statement There is a block of wood floating on the surface of a body of water, with a ball attached to the bottom of the block by a string. I am asked to find the volume of the ball given the tension in the string. We also know the volume of the wood block from an earlier problem if...