Wiley Interdisciplinary Reviews (abbreviated WIREs) is a set of peer-reviewed scientific journals that each publish interdisciplinary review articles on high-profile topics. The series was established in 2009 and is published by Wiley-Blackwell. Each journal publishes new review articles every month.
The journal series won the 2009 R.R. Hawkins Award from the Association of American Publishers.
Homework Statement
My picture won't upload but there is an x-y plane with point P at (5,4) and a vector shooting off from P in the SW direction. There are two wires pointing into the page (in the z plane) at (5,2) and (10,2).
Here is the actual problem:
Two very long straight...
Just to know...??
This is no homework,, this is just my effort trying to solve this out...
If we ever succeed to transfer electrical power without the use of wires (conduction) would that mean that the speed of light is reached? And If your answer is no, then how come the electric power that...
i have been stuck on this question for two days, can anyone help!
A museum of modern art is displaying an irregular 358 N sculpture by hanging it from two thin vertical wires, A and B, that are 1.25 m apart . The center of gravity of this piece of art is located 48.0 cm from its extreme right...
Homework Statement
A researcher would like to perform an experiment in zero magnetic field, which means that the field of the Earth must be cancelled. Suppose the experiment is done inside a solenoid of diameter 1.0 m, length 4.0 m, with a total of 5000 turns of wire. The solenoid is...
Homework Statement
http://s27.photobucket.com/albums/c191/oscar888/?action=view¤t=LONCAPA.gif
The four wires that lie at the corners of a square of side a= 3.50 cm are carrying equal currents i= 2.10 A into (+) or out of (-) the page, as shown in the picture.
Part A: Calculate...
Homework Statement
can someone please help? I am having major problems with physics right now :(
Each of the wires carries a current of magnitude I. The current in wire 1 is directed out of the page and that in wire 2 is directed into the page. The distance between the wires is 2d. The...
Homework Statement
Calculate the magnitude of the magnetic field at a point midway between two long, parallel wires that are 1.0m apart and have currents if 10A and 20A, respectively, if the currents are a) in opposite directions, and b) in the same direction.
Homework Equations
µ =...
I'm sorry to post two questions in succession, this is another one on the same topic (I'm obviously having trouble with this whole concept for some reason...)
Homework Statement
Three long parallel wires are 3.8 cm from one another. (Looking along them, they are at three corners of an...
Homework Statement
Two long thin parallel wires 13.0 cm apart carry 25 A currents in the same direction. Determine the magnetic field at point P, 12.0 cm from one wire and 5.0 cm from the other.
(Sorry I don't have a diagram, but this is essentially a triangle, with sides of 13 cm, 12...
Homework Statement
Two long thin parallel wires a distance d = 15.3 cm apart carry 25-A currents (I) in the same direction. The magnetic field is measured at point P, a distance d1 = 13.3 cm from the lower wire and a distance d2 = 5.3 cm from the upper wire.
a. Find the x and y components...
Homework Statement
four long straight parallel wires located at the corners of a square of side l=6cm carry equal current I=10A which is perpendicular.Determine the magnitude and direction of B at the center of the square.
Homework Equations
don't have,so sorry..
The Attempt at a...
Homework Statement
Two straight parallel wires carry currents in opposite directions. The wire on the right carries a current of I2 = 11.5 A. Point A is the midpoint between the wires. The total distance between the wires is d = 10.7 cm. Point C is 5.88 cm to the right of the right wire...
Homework Statement
Hi I need some concepts on magnetic fields explained to me. 1.)
I know in theory that if you have a current carrying conductor say along the X-axis then the magnetic field generated would be in the y,z components
So let's say I wish to measure the magnetic field in real...
Homework Statement
Sounds like the beginning to a bad joke right?
Two long straight wires pass through a window frame (1m x 1.5m). One wire carries 1A out of the room and one wire carries 8A in. Find magnitude of closed integral of vector B * vector dl around window frame.
Answer in...
Hello everyone, as you can tell I'm new and just wondering if I could get some help with this question as I'm not sure where exactly I've gone wrong:
Homework Statement
Two wires are used to connect a lamp to a power supply of negligible internal resistance. The potential difference...
Homework Statement
A packed bundle of 100 long, straight, insulated wires forms a cylinder of radius R = 0.800 cm. If each wire carries 1.50 A, what are the magnitude and direction of the magnetic force per unit length acting on a wire located 0.200 cm from the center of the bundle?
2...
Homework Statement
A long straight wire 1 lies along the x-axis. A long straight wire 2 lies along the y-axis so as
to pass very near, but not quite touch wire 1 at the origin. If both wires are free to move, what happens when currents are sent simultaneously in the +x direction through wire 1...
Hi all.
I build a project that detects the level of the water reservoir and shows that digitally using the 7-segment display... It worked...
This requires a wire with positive voltage (5V) to be at the bottom of the water reservoir (it's a copper - network wire) and a number of...
Homework Statement
Three long parallel wires are 4.0 cm from one another. (Looking along them, they are at three corners of an equilateral triangle.) The current in each wire is 8.00 A, but its direction in wire M is opposite to that in wires N and P. By convention we can say that M is at the...
Homework Statement
Three long parallel wires are 4.0 cm from one another. (Looking along them, they are at three corners of an equilateral triangle.) The current in each wire is 8.00 A, but its direction in wire M is opposite to that in wires N and P. By convention we can say that M is at the...
I have to connect very thin wires d<40\mathrm{\mu m} of different metals multiple times to make a thermopile. Due to the geometry, the cost of the wire and personal nerves I do not have too many tries. The wires are insulated, and in the end the whole thermopile should also be electrically...
Homework Statement
Two wires are both 22.3 meters in length and carry perpendicular currents as shown the the left. I1 = 4.5 A and I2 = 6.3 A. Points A and B are located an equal distance from both wires with d = 17 cm.
a) What strength of the magnetic field at A?
c) What strength of the...
A steel wire of length 5.0m and radius 0.300 mm is knotted to another steel wire of length 5.0m and radius 0.10 mm. The ires are strethed with a tension of 150 N. How long does a transverse wave pulse take to travel the distance of 10 m from the beginning of the first wire to the end of the...
Homework Statement
Two wires carry current I1 = 53 A and I2 = 37 A in the opposite directions parallel to the x-axis at y1 = 3 cm and y2 = 13 cm. Where on the y-axis (in cm) is the magnetic field zero?
I1= 53 A
I2=37A
Homework Equations
B(r)=Iu/[2(pi)r]
The Attempt at a Solution...
Homework Statement
If two long parallel wires are separated by a distance of 1.00 m and there is a current of 5.00 A up in the wire on the left and a current of 10.0 A up in the wire on the right, find the:
a. magnetic field at a point 30.0 cm to the right of the left wire...
Two wires carry current I1 = 49 A and I2 = 31 A in the opposite directions parallel to the x-axis at y1 = 7 cm and y2 = 15 cm. Where on the y-axis (in cm) is the magnetic field zero?
I don't even know where to start on this. Any help would be great!
Homework Statement
Two supporting wires keep a flagpole in its
vertical position. The horizontal components of the tensions in
the supporting wires must be equal and opposite,
otherwise the pole will move laterally. The
vertical components may be different.
The longer wire forms a 30...
help fast Waves: two parallel wires how much time til the waves will pass each other
Homework Statement
Two wires are parallel, and one is directly above the other. Each has a length of 40.9 m and a mass per unit length of 0.0208 kg/m. However, the tension in wire A is 51.5 x 102 N, while the...
Hey, I am fiddling around building, basically an alternator. Well, this is what i have designed so far. I made two copper coils, then squished so they were very eliptical and then connected the two flat coils together with zip ties and made a large coil. Basically, the large coil is the two...
Homework Statement
Point P is midway between two long parallel straight wires that run north-south in a horizontal plane. The distance between the wires is 1 cm. Each wire carries a current of 1 A toward the north.
a) find the magnitidue and direction of the magnetic field at point P...
1. Two infinitely long wires running parallel to the x-axis carry uniform charge densities +\lambda and -\lambda . Find the potential at any point. Show that the equipotential surfaces are circular cylinders, and locate the axis and radius of the cylinder corresponding to a given potential...
Homework Statement
A 30.0m steel wire and a 20.0m copper wire, both with 1.00mm diameter,
are connected end to end and stretched to a Tension of 150N. How
long does it take a transverse e wave to travel the entire length of
the two wires?
Homework Equations
Voulume of Rod = pie r^2(L)...
Homework Statement
Three wires have linear density of 50 g/m. They each carry the same current. The bottom two are 4 cm apart and carry currents into the page. What current I will allow the third wire to float so as to form an equilateral triangle with the other two?
Homework Equations...
Okay, this is a conceptual problem that I'm sure is easy, but is bugging me:
I have two wires lying in the xy-plane. They're perpendicular, with one wire lying along the y-axis and on along the x-axis. The current in each wire points along the y and x axes, respectively.
Now: What's the...
I'm wondering what causes the force is that holds wires together when their is a current flowing through them, and how to calculate it for different currents. As an example, when I am hooking my car battery up and you touch the jumper cable to the battery to connect the terminals, it kinda...
Homework Statement
Two long, straight, parallel wires, 10.0 cm apart carry equal 4.00-A currents in the same direction, as shown in the figure. ( in the figure the current carrying wires are at the end of a straight 10cm line and they are each in the direction coming out of the page)...
Homework Statement
Suppose that I1 = I2 = 20 A; currents are running opposite each other, and that the separation between the wires is 0.019 m. By applying an external magnetic field (created by a source other than the wires) it is possible to cancel the magnetic field at the position of each...
Homework Statement
Two infinitely long parallel wires separated by a distance 2d, one carries uniform linear charge density of \lambda and the other one carries an uniform linear charge density of -\lambda, find the electric field at a point distance z away from the middle point of the two...
Homework Statement
Two long, parallel wires carry currents of 20 A and 10 A in opposite directions, as in the figure below. Which of the following statements must be true? (Select all that apply.)
In region II the field is into the page and can be zero.
There are no points where the...
Homework Statement
Two parallel wires are separated by 5.30 cm, each carrying 2.5 A of current in same direction. What is the magnitude of the force per unit length between the wires?
Homework Equations
B2=(mo constant)I2/2pid
The Attempt at a Solution
plugged 2.5 in for I and...
Homework Statement
Two parallel wires are 6.8 cm apart, and
each carries a current of 23.8 A.
The permeability of free space is 4pi ×
10−7 T · m/A.
If the currents are in the same direction,
find the force per unit length exerted by one
of the wires on the other.
Answer in units of...
Homework Statement
A nonuniform horizontal bar of mass m is supported by two massless wires against gravity. The left wire makes an angle (phi) with the horizontal, and the right wire makes an angle . The bar has length L.
What is the position of the center of mass of the bar, measured as...
Homework Statement
The two wires carrying the currents are infinite in length. i1 = 5.00 A out
of the paper and i2 = 7.00 A into the paper. a = 40.0 cm and b = 30.0 cm.
Calculate the direction of the magnetic field at P, measured counterclockwise
from the +x axis.
Answer: 126.4°...
Homework Statement
Two straight parallel wires are placed vertically on a wall. The distance between the wires is 12 cm and the current through each one is 7.5A. In the left wire the current is directed upwards and in the right one the current points downwards. Determine the magnetic field...
What type of metal are typically in wires?
I believe that usually wires are made out of copper. Are most wires made out of copper?
Does the size of the wire usually determine what metal is in a wire? For instance, are larger wires typically composed of copper, while smaller wires are...
AC motor from washing machine, has 11 wires from it. Aside from Earth I have no idea what they are however I have observed:
If the white+blue OR the red+orange wires are bought into contact then the shaft becomes hard to turn AND I can get a few small sparks by spinning the shaft and quickly...
I felt like this problem was simple. We submit our answers in WebAssign however, and I can not find the correct solution.
Two parallel wires are 20.0 cm apart, and each carries a current of 40.0 A.
(a) If the currents are in the same direction, find the force per unit length exerted on...
Homework Statement
Two long, straight wires are separated by a distance of 32.7 cm. One wire carries a current of 2.69 A, the other carries a current of 4.33 A.
Find the force per meter exerted on the 2.69 A wire.
Homework Equations
The Attempt at a Solution
Homework Statement
Two negative charges repel each other.
Two parallel wires with current going in the same direction attract each other.
Yet if one walks with the moving charge in the wires, the charges appear stationary and should repel each other - explain why if you are stationary...