Recent content by 2Pac

Consider a cube of sides a=8.10 m, as shown in the diagram below. Suppose that a non-uniform electric field is present and is given by E=bx^n in the direction of the x-axis, where b=6.35 N/(Cm^n) and n=1.9. Calculate the magnitude of the total charge within the cube. so i started by saying...

I guess i'll give you another day to help me out. :-p

diagram looks like this: ^ | a__________________________ f | | | | | | P | | | | | | |__________________________| | i b...

I found the work done along the path ibf to be 14.9cal, converted that to J and divided by .023m^3 to get a pressure in PA. converted 30.5 cal to joules and divided by .023m^3 again. subtracted the two... answer is incorrect. so if that isn't the answer how do i go about solving this?

When a system is taken from state i to state f along the path iaf as shown in the figure, it is found that Qiaf = 53.6 cal and Wiaf = 30.5 cal. Along the path ibf, Qibf = 38.0 cal. If the difference in volume between states i and b is 0.023 m3, what is the pressure dufference betwen states b and f?

anyone care to try?

During high winds, the atmospheric pressure inside a house may blow off the roof because of the reduced pressure outside. Calculate the force on a square roof of side 22.0 m if the wind speed over the roof is 29.0 i used bernoulli's equation and got an answer of... 246356N i used 1.21 as...

Are we looking for a magnitude of acceleration or a vector form?

No, the question asks about the first order maxima and it would not make sense for it to be asking about the center maxima because it is in the center. The intensity graph would look something like this (where the large hump is in the centerline of the slit):

A single slit diffracts laser light of wavelength 610 nm onto a screen 2.25 m away. The distance between the two first-order maxima on either side of the central peak is 4.00 mm. How wide is the slit? Anyone give me some help? i got an answer of .001029m and apparently this isn't...

Thanks a bunch. yea that makes perfect sense.

yes the intensity I=I*cos^2(x), i still do not see the steps used to prove the given true.

You need to rotate the polarization direction of some linearly polarized light by an angle φ. That is, the light is initially linearly polarized along some direction (let's call it the y direction), and you need to change it so that the polarization direction is φ away from the y direction. In...

Thank you very much Doc Al

A man is sitting in a bosun's chair ( :confused: ) that dangles from a massless rope, which runs over a massless, frictionless pully and back down to the man's hand. The combined mass of the man and chair is 95 kg. (a) with what force must the man pull on the rop for him to rise at a constant...