Recent content by frostchaos123

Homework Statement 3 narrow slits with spacing of d and 3d/2 as in picture, the slits are irradiated from left with a plane of monochromatic light with wavelength 2d/5. If the bottom slit is covered with a filter that introduces a half phase change, how many principal maxima will be...

ok, i got it, apparently i got the magnetic field and the current flow mixed up. So to summarise if the loop is bigger than r2, there will be a portion of the current flowing into the surface, and another equal portion coming out of the surface enclosed by the loop And if the loop is...

Not quite sure, but just to double confirm, is my representation of the amperian loop in red correct for r > r2? So do you mean that the current going into the page at the right hand side of the solenoid is canceled by the current coming out of the page on the left hand side...

Homework Statement A toroidal solenoid has inner radius r1=15.0 cm and outer radius r2=18.0 cm. the solenoid has 250 turns and carries a current of 8.50 A. what is the magnitude of the magnetic field at the following distances from the center of the torus (a) 12.0 cm; (b) 16.0 cm; (c) 20.0...

Homework Statement 2 Spherical conductors B and C having equal radii and carrying equal charges repel each other with force F. Another conductor A having same radius as B but uncharged is brought into contact with B, and then C and then removed from both. Find the new force of repulsion...

I see. In this case would it be correct to say that force should not be used, because even though the forces cancel out each other, there is a residual velocity that continues downwards and crash the person into the ground?

Homework Statement As in the attachement, find the minimum v such that the ball does not touch the rock. The Attempt at a Solution The solution given is mg*cos(theta) - mv^2/R = n < 0, where theta is the angle between the ball and the person. My question is why is there a normal...

Question is: A balloon is 36m on top of a river, a bungee jumper has a unstretched cord of 25m attached to him and his weight is 700n If he is to stop 4m above the river what should the force constant of the cord be? My calculation is that since the cord can only extend 7m, using hooke's...

Thanks for the help :)

Homework Statement Referring to the attachment, a cylinder of 2.5m filled with air is submerged to a dept of 82.3m into the sea such that sea water in cylinder is now x m. Water at bottom is 277.15K. The Attempt at a Solution Using ideal gas law PV=nRT of air, the answer gives...

Oops you are right the sphere should have a lesser initial volume, i was assuming that the sphere was bigger than the cube. Thanks.

Homework Statement A solid sphere and a solid cube are made from the same material. The sphere would just fit within the cube, if it could. Both begin at the same temperature, and both are heated to the same temperature. Which object, if either, has the greatest change in volume? The...

Homework Statement Hi all I have been struggling to find the right ans for the I(R1) in this circuit. First i consider only the voltage source by opening the current source. As such i find that I'(R1) = (4-0.7)/1K = 3.3mA Secondly i consider the current source by shorting the...

I see, thanks for all the replies. So basically, I have to consider that the acceleration for the m1 part and the m2 part as a whole and formulate them accordingly, while remembering what the "a" physically means.

So in other words, I should reformulate them to become: m1*(-a) = -T; m2*(a) = -T + m2*(g) ? But if it is true in this case, wouldn't the expression m1*(a) and m2*(a) require one to know before hand which direction would the acceleration points to?