loop

  1. C

    Loop of wire falling out of a magnetic field.

    I am struggling on finding the time it takes the loop of wire to completely leave the field in part a. I have found the differential equation of motion to me dv/dt+at=g where a is a constant determined to be a=826.72. I found the solution of the DE to be v(t)=g/a(1-e^(-at)) I have tried...
  2. L

    A different type of roller coaster loop problem

    1. The problem statement, all variables and given/known data A roller coaster at the nearby amusement park Physics Hill, has a large circular loop where cars travel at the top of the loop at 25.0 m/s causing the riders to enjoy an acceleration of 3g. Assuming the height of this loop is the same...
  3. kelsiu

    Can Ampere's law be applied to 3D loop

    Usually in textbooks Ampere's law is just illustrated using 2D loops which forms a plane. Can the law be applied to 3D loops which cannot form a plane surface within the loop? In a 3D loop which surface should we count when we count the current? In 2D case it is easy because there can only...
  4. S

    Kirchoffs Loop Rule

    1) Use Kirchoff's rules to find each current in the complex circuit. http://i37.photobucket.com/albums/e65/cavalierkingcharles1/Image2.png (Sorry for the bad drawing) 2) For the following circuit, what is the correct application of Kirchoff's loop rule for the outer loop and why? (The...
  5. A

    Loop the Loop

    Hi all, I'm having trouble with a question. A ball of mass m rolls, without being slowed by friction, down a ramp leading to a vertical circular track. R is the distance from the centre of the track to the centre of mass of the ball. The radius of the ball, r, is much less than R. If...
  6. A

    Loop the loop question

    Hello there, i'm studying for my final exams which are in november and im really confused about a question about loop the loop. so this is the question in my book, a loop the loop machine has a radius R of 18 m, a) what is the minimum speed at which a cart must travel so that it will...
  7. F

    Is EMF generated in this special loop of wire

    A square loop of wire is kept hanging upright and has 3 sides made of copper and the lower horizontal side made of iron. The loop has its surface normal to a uniform magnetic field B. The question is: If the loop is allowed to fall while fully immersed in this field B, will an EMF be generated...
  8. B

    What is the specification of the rebar tie wire and loop wire ties?

    How can i learn the specification of the rebar tie wire and loop wire ties?
  9. R

    current loop, determine magnitude of force acting on loop.

    A rectangular current loop is located near a long, straight wire that carries a current of 12 A (see the drawing). The current in the loop is 25 A. Determine the magnitude of the net magnetic force that acts on the loop. I've included a pic as an attachment. .000157 N is the correct answer. I...
  10. A

    Induction in a loop of wire

    Hi there the problem given is: A circular loop of wire can be used as a radio antenna. If a 22.0-cm-diameter antenna is located 2.20km away from a 95.0-MHz source with a total power of 55.0kW, what is the maximum emf induced in the loop? (Assume that the plane of the antenna loop is...
  11. B

    Magnitism: General Rule For A Loop Segment

    I'm studying for a midterm in Electrodynamics right now, and I'm going through the professor's homework solutions and she evoked something she referred to as the "general rule for a loop segment." I couldn't find this equation in the book and I must have missed the class where she went over it...
  12. K

    A problem with a loop

    Hi, I've got a problem which no matter how long i sat, i couldnt figure it out and didn't find anything like it on google. well, here it goes: (i'm translating it from another language so it might sound a little weird) "A motorcycle drives in a loop, the radius of the loop is 15 meters. the...
  13. K

    a problem with a loop.

    Hi, I've got a problem which no matter how long i sat, i couldnt figure it out and didn't find anything like it on google. well, here it goes: (i'm translating it from another language so it might sound a little weird) "A motorcycle drives in a loop, the radius of the loop is 15 meters...
  14. G

    [SOLVED] Current-carrying loop

    Consider the current-carrying loop shown in the figure, formed of radial lines and segments of circles whose centers are at point P. Find the magnitude and direction of B at P.
  15. A

    radius of the plane's loop

    a 75 kg pilot flies a plane in a lopp as. At the top of the loop, when the plane is completely upside-down for an instant, the pilot hangs freely in the seat and does not push against the seat belt. The airspeed indicator reads 120 m/s. what is the radius of the plane's loop? hope you can help me
  16. M

    force on a loop

    In the figure below, a long straight wire carries a current of Ia= 5.00 A. A square loop with a side of length 0.250m is placed a distance 0.100 m away from the wire. The square loop carries a current Ib=2.40 A. Find the magnitude of the net force on the square loop. i am using the following...
  17. P

    the effect of change in area of a wire loop...?

    A circular loop in the plane of the paper lies in a .75 T magnetic field pointing into the paper. If the loops diameter changes from 20.0 cm to 6.0 cm in .50 s, (a) what is the direction of the induced current? (b) what is the magnitude of the average induced emf? (c) if the coil resistence is...