Loop Definition and 1000 Threads

Homework Statement Homework EquationsThe Attempt at a Solution This is what i did about (a) but i don't know how to approach (b), it doesn't have x,y components, only Bz component.

Homework Statement The problem asks to find the Total Force on the Circuit Loop. I have a circuit loop with length 30.0 cm and width 10.0 cm with a current I2= 30.0 A that is flowing counter-clockwise. There is a wire that has the current I1=15.0 A flowing from left to right and is 7.50 cm from...

Hiya, I'm struggling to find/figure out some kind of intuitive explanation why it is the changing flux of the contained area that matters for Faraday's law of induction. It appears odd to me that it is the change of flux through the contained area that matters, rather than the flux that goes...

Homework Statement A small car with mass .800 kg travels at a constant speed of 12m/s on the inside of a track that is a vertical circle with radius 5.0m. If the normal force exerted by the track on the car when it is at the top of the track is 6.00N, what is the normal force at the bottom of...

Is a small-loop antenna a dipole or a monopole? Is a (small) 8-shape antenna a dipole or a monopole? Is a 8-shape antenna a dipole antenna?

Homework Statement A loop of wire in the form of a square 1.50 m on each side, its plane makes an angle of 40.0° with a uniform magnetic field of 0.95 T. What is the magnetic flux through the loop? Homework Equations Φ = BAcosθ A = s^2 The Attempt at a Solution I found the area of the square...

Hello! When calculating the load factor in a loop the formula is n=V^2/(g*R)+cos(teta) during pull-up of a loop and another formula is n=1/cos(phi) during a level-flight banked turn. How does one combine these to calculate the load factor during a twisted loop?

Homework Statement A rectangular loop of wire with sides H = 22 cm and W = 77 cm is located in a region containing a constant magnetic field B = 0.82 T that is aligned with the positive y-axis as shown. The loop carries current I = 334 mA. The plane of the loop is inclined at an angle θ = 30°...

Homework Statement Homework EquationsThe Attempt at a Solution I have the complete solutions for this problem, I just don't understand them: This is the first part. I don't understand what r' is, or how we found it. Otherwise I understand the concept of the problem just not the details...

Homework Statement A small toy car slides down an elaborate track. At one point during this trip, the car will go around a vertical loop with radius 15cm as shown. What is the minimum speed the car must have at the bottom of the loop in order to make it all the way around the loop without...

Homework Statement Homework Equations C=Δq/VThe Attempt at a Solution So part a: The capacitance of 3 should be the difference in charge of b and a divided by the voltage of the circuit? C3=(14μC-6μC)/12V =6.67*10-7 F This was wrong...

Homework Statement I = 0.47 A ε1 = 16.0 V ε2 = 8.0 V R1 = 5.0 Ω R2 = 9.0 Ω r1 = 1.6 Ω r2 = 1.4 Ω a) Find the terminal voltage Vab of the 16.0 V Battery b) Find the potential difference Vac of point a with respect to point c Homework Equations Vab = Va - Vb = ε1 - Ir1 Vac = Va - Vc = IR1 + ε2...

One of the Feynman rules of QED is the following: For a closed fermionic loop, the Feynman rule is to start at an arbitrary vertex or propagator, follow the line until we get back to the starting point, multiply all the vertices and the propagators in the order of the line, then take the trace...

Hello there, this isn't necessarily a homework question. I came across this qn during revision and didn't know how to solve it. Any help would be greatyly appreciated. The answer is 0.97 1. Homework Statement For the ideal OP-Amp in negative feedback configuration shown in Figure Q30...

Homework Statement A circuit is constructed with four resistors, one capacitor, one battery and a switch as shown. The values for the resistors are: R1 = R2 = 41 Ω, R3 = 68 Ω and R4 = 154 Ω. The capacitance is C = 49 μF and the battery voltage is V = 12 V. The positive terminal of the battery...

I have tried a bunch of different ways to edit this problem. The user input is 4 and I keep getting a output of 8 or 0. I appreciate the help! The problem is: "Simon Says" is a memory game where "Simon" outputs a sequence of 10 characters (R, G, B, Y) and the user must repeat the sequence...

I have to admit I am not good on physics but I am willing to try to understand how is possible for a plane or a glide that's falling without thrust applied downward to make a loop (by changing direction or using the elevators on the tail of plane, like in this picture. I am try to write a...

I have a recycle loop system: Please could someone give me a place to understand the theory behind it? What would be its purpose? Where would it be used? I've googled recycle loop systems but I can't find anything relevant, is it the same as a pressurized water reactor...

Hi, guys I am very new to programming in fortran90 and I am just experimenting with stuff. I have been trying to get my output of my loop program to a text file. But for some reason it will not work. Could someone please advise. Code displayed below: PROGRAM loop IMPLICIT NONE integer ...

Homework Statement An empty ball , of mass m moment of inertia I = (2m.r²)/3, is rolling across the path shown below : there is friction fr from A to C . r is the radius of the ball , and R is the radius of the circular part within the path . what would be the minimal height h , so...

Here is the code. I have binary list of ones and zeros and I want to see the values of the consequtive ones. For example, 111=3 and 11=2 So I created a count loop and increment the count when A is not 0. Then I tried to update the count to 0 once the for loop got to 0 again, but for some...

Homework Statement A ball with radius ##r## is inside a hollow cylinder with radius ##r+R##. In the first part of the assignment, one has to calculate the minimum kinetic energy the ball has to have at the bottom in order to complete a full loop in the cylinder. It turns out to be...

Homework Statement Determine the mutual inductance between a very long, straight wire and a conducting equilateral triangular loop Homework Equations I know how to do it but I'm stuck at the step of finding the total inductance through the triange. The Attempt at a Solution we know that the...

Homework Statement Given a string and a non-empty word string, return a string made of each char just before and just after every appearance of the word in the string. Ignore cases where there is no char before or after the word, and a char may be included twice if it is between two words...

this paper https://arxiv.org/abs/1701.02311 Hypercuboidal renormalization in spin foam quantum gravity Benjamin Bahr, Sebastian Steinhaus (Submitted on 9 Jan 2017) In this article we apply background-independent renormalization group methods to spin foam quantum gravity. It is aimed at...

Can it be either?

https://arxiv.org/abs/1411.1935 This paper says LQG does not produce the Unruh effect effect, and therefore must be wrong. What do you guys think. You can click into the PDF to see the entire paper.

Unifying Equation Albert Einstein searched unsuccessfully for the unifying equation of physics (30 years). Has anyone found it yet? Did I miss the memo? If not, did everyone give up? With all our super computers and millions of scientists on the planet it surprises me someone hasn't figured...

Homework Statement Homework Equations Flux = DeltaB * Area The Attempt at a Solution : Since the magnetic fields are going in opposite directions through the loop, I assumed that they would have different signs, so I chose 2.0 T to be positive and 1.0 to be negative, so when calculating the...

Homework Statement A conductor consists of a circular loop of radius R and two long, straight sections as shown in the figure. The wire lies in the plane of the page and carries a current I. (a) What is the direction of the magnetic field at the center of the loop? (b) Find an expression for...

im writing a 2d space simulator and in it i want to simulate rockets as well as things like space elevators and spaceguns to allow players to compare how each system works and compare pros and cons. one idea i want to include in that simulator is my own that i want to promote to the new...

Homework Statement In my AP Physics class we need to design a loop that pulls around 4 G's. From what I understand, the diameter of the loop must be 2/5 times the initial drop. I cannot seems to get the G forces around 4. Any help? I found that the Clothoid loop reduces G forces but I can't...

Homework Statement Suppose a magnetic monopole q_m passes through a resistanceless loop of wire with self-inductance L. What current is induced in the loop? Homework Equations \nabla \times \textbf{E} = - \mu_0 \textbf{J}_m - \frac{\partial \textbf{B}}{\partial t} \nabla \cdot \textbf{B} =...

recently this paper Quantum Gravity in the Sky: Interplay between fundamental theory and observations Abhay Ashtekar, Brajesh Gupt (Submitted on 15 Aug 2016 (v1), last revised 12 Nov 2016 (this version, v2)) Observational missions have provided us with a reliable model of the evolution of the...

Hello, I am in my first class for C++, so I apologize in advance if this question is amateurish. To be clear, this project is already finished, and what I am trying to do already counted points off against me; I am not interested in cheating, I just want to know what the answer to my issue is...

Hello Forum, In DC circuits, I understand that a ground is a point or an entire conductor where the electric potential is set to be V=0 and the potential V at any other point in the circuit is referenced to that. How does the the concept of ground loops work? Why are they not desirable? What...

Homework Statement steady-state current through the loop will be of the form Bsin(1000t +b). What is the phase angle 'b'? in rads Homework EquationsThe Attempt at a Solution [/B] The answer is meant to be 0.46rads/s. However I am getting 9.65x10^-5?? I have no idea what I did wrong. I...

Homework Statement Loop of current ##I## sitting in the xy plane. Current goes in counter clockwise direction as seen from positive z axis. Find: a) the magnetic dipole moment b) the approximate magnetic field at points far from the origin c) show that, for points on the z axis, your answer is...

Homework Statement This is a theoretical question, one I'm not sure about. It just randomly popped into my head. Say there is a jumbled wire, one in a glob shape but not overlapping. (Like a deformed circle, or maybe just a rectangle). Assuming we are in a place called "physics utopia" where...

Homework Statement Find the total maximum induced current for the diamond-shaped metal loop that is moving at a speed of 10 m/s towards a uniform magnetic field of 0.8T. All four lengths equal 10 cm or 0.01 m. Homework Equations emf = -dΦB/dt ΦB=∫B*dA A = (1/2)bh The Attempt at a Solution I...

I have created a code in MATLAB that can plot the acceleration graph of the SVAJ diagram for 3 of the SCCA Family of Functions with a theta range from 0 to Beta. I cannot for the life of me, figure out what I am doing wrong, maybe some fresh eyes can help me. Ignore the 'trial', I'm trying to...

At next to leading order, a photon may couple to gluon via means of a quark loop insertion. Consider the process $$ \gamma(k_1) + g(p_1) \rightarrow \gamma(k_2) + g(p_2)$$ Apparantly there are eight diagrams at one loop contributing to this process and two are zero on grounds of colour...

Hello, I have an arduino code for driving a peltier pile to a given set point (TEMP_SP). I am trying to input the set temperature from Matlab GUI (with different protocols, user will enter n temperatures and the time intervals, arduino will implement the PID controller and output the...

How would you write the vector loops and geometric constraints for this mechanism?

Homework Statement Develop aprogram that will determine the second derivative of pi(16 x^2 - y^4) at y=2 with step sizes of 0.1, 0.01, 0.001…. until the absolute error (numerical-analytical) converges to 0.00001. Use the 2nd order Central Difference Formula. User Input: y, tolerance Output: h...

Homework Statement A closed wire loop in the form of a square of side 4.0 cm is mounted with its plane horizontal. The loop has a resistance of 2.0 * 10-3 Ω, and negligible self inductance. The loop is situated in a magnetic field of strength 0.70 T directed vertically downwards. When the field...

In an amusement park, the new roller-coaster ride The Loopy Looper is com- posed of a number of full loops, where the car goes round upside down. The car is attached to the track, but there are no seat belts. Consider one such loop, which can be taken as a circle with radius r. The mass of the...

Homework Statement A closed wire loop in the form of a square of side 4 cm is placed with its plane perpendicular to a uniform magnetic field, which is increasing at the rate of 0.3 T s-1. The loop has negligible inductance, and a resistance of 2 * 10-3 Ω. Calculate the current induced in the...

Homework Statement find the voltage between a and d and terminal of each batteries Homework Equations Junction Rule and Loop Rule The Attempt at a Solution I got three equation JR : I3 = I1+I2 LR : 45-I3-47I3-34I1 = 0 45-I3-47I3+85-I2-18I2 = 0 I can't solve these...

Hello friends, I am trying to find how calculate the magnetic field created by current loop considering that there is a some geometry of material that can enhance the magnetic field. I thought it can be solved by multipling by permeability μ but realized that the iron core changes the picture of...