Search: Physics: Diameter of a copper wire

Number of results: 99,168

physics
Suppose that you wish to fabricate a uniform wire out of 0.900 g of copper. Assume the wire has a resistance R = 0.500 , and all of the copper is used. (a) What will be the length of the wire? (m) (b) What will be the diameter of the wire? (µm)
Friday, September 17, 2010 at 10:10pm by lynette

Physics
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.8g of copper and asked to make a wire, using all the metal, with a resistance of 1.3 Ohm. Copper has a density of 8900 kg/m^3. What length will you choose for your wire(in meters)? ...
Wednesday, February 17, 2010 at 6:09pm by Anthony

Physics
1) Suppose that you wish to fabricate a uniform wire out of 1.15 g of copper. Assume the wire has a resistance R = 0.600 , and all of the copper is used. (a) What will be the length of the wire? m? (b) What will be the diameter of the wire? µm? 2) A rectangular block of ...
Monday, October 4, 2010 at 11:44pm by Tommy

University Physics
A hollow copper wire with an inner diameter of 0.60mm and an outer diameter of 1.8mm carries a current of 15A. What is the current density in the wire?
Friday, March 22, 2013 at 10:59pm by Wolf

Chemistry
If the copper is drawn into wire whose diameter is 9.50 , how many feet of copper can be obtained from the ingot? The density of copper is 8.94 . (Assume that the wire is a cylinder whose volume is , where is its radius and is its height or length.)
Wednesday, August 31, 2011 at 7:10pm by Okoye

college physics
A 4m long copper wire has a diameter of 2mm and carries a current of 10A. Determine the ff: a. current density in the wire b. electric field c. potential difference between the ends of the wire d. resistance of the wire
Monday, February 25, 2013 at 2:04am by Zell

physics
A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons: (b) There is one ...
Monday, September 19, 2011 at 4:29pm by austin

physics!
A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons: (b) There is one ...
Monday, September 19, 2011 at 4:23pm by austin

physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
Monday, April 8, 2013 at 9:44pm by bud

Physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
Monday, April 8, 2013 at 6:57pm by bud

physics
copper has 8.5 x 10^28 electrons per cubic meter. (a) how many electrons are there in 30 cm length a 12 gauge copper wire (diameter 2.05 mm)? (b) if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the wire? (There are 6.24 x ...
Monday, October 8, 2012 at 8:25pm by jewel

physics
A 15 ohm resistor is made from a copper wire of mass 14.2 grams. What is the wire's diameter and length?
Monday, March 4, 2013 at 8:58pm by lindsey

Roper
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1 g of copper and asked to make a wire, using all the metal, with a resistance of 2.0 (ohms). Copper has a density of 8900 kg/m^3. What length will you choose for your wire? What ...
Thursday, March 24, 2011 at 10:34am by Daniela

Physics
A 14.0 ohm resistor is made from a coil of copper wire whose total mass is 23.0 g. What is the diameter of the wire, and how long is it?
Sunday, February 6, 2011 at 2:45pm by George

Physics
Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length L2, how do L1 and L2 compare if wire 1 is made from copper and wire 2 is made from aluminum? The resistivity of copper is 1.7 × 10-5Ω&...
Friday, October 15, 2010 at 10:46pm by Max

Physics
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1g of copper and asked to make a cylindrical wire, using all the metal, with a resistance of 1.7 Ohm. What length l will you choose for your wire? What diameter d will you choose for ...
Wednesday, February 17, 2010 at 6:17pm by Anthony

chemistry stoichiometry
My chem teacher gave us this problem Twelve-gauge copper wire,like the kind commonly used in residential electrical systems, is roughly cylindrical and has a diameter of approximately .1040in. Copper's density is 8.92g/cubic cm and copper atoms have an approximate atomic ...
Sunday, September 9, 2007 at 9:34pm by Julissa

physics
the resistance of copper wire of length 1m is 0.1 ohm the diameter of the wire is 0.045cm find its specific resistance
Tuesday, March 5, 2013 at 12:02pm by amit kumar

physics
A copper wire has a circular cross section with a radius of 3.75 mm. If the wire carries a current of 4.00 A, find the drift speed of the electrons in the wire. (Assume the density of charge carriers (electrons) in a copper wire is n = 8.46 *10^28 electrons/m^3.) thanks
Sunday, March 27, 2011 at 12:29pm by Rachel

Physics
You need to make a 100 microH inductor on a cylinder that is 5.0 cm long and 1.0 cm in diameter. You plan to wrap four layers of wire around the cylinder. What diameter wire should you use if the coils are tightly wound with no space between them? The wire diameter will be ...
Sunday, April 13, 2008 at 2:31pm by Jill

Physics
A current of 4 A flows in a copper wire 10 mm in diameter. The density of valence electrons in copper is roughly 9 × 1028 m−3. Find the drift speed of these electrons. Answer in units of m/s.
Thursday, November 1, 2012 at 2:21am by Aj

college physics
How to do this problem? Compute the number of turns of wire on a coil whose resistance measures 15.5 ohms, and which is wound around a 2-inch diameter form in a single layer of 28 gage enameled copper wire.
Sunday, April 4, 2010 at 8:43pm by Mike

physics
What is the resistance of a 2.5 m length of copper wire 1.3 mm in diameter?
Tuesday, February 15, 2011 at 8:51pm by michelle

Physics
A copper wire has a resistance of 24 Ω at 20°C. An aluminum wire has three times the length and twice the radius of the copper wire. The resistivity of copper is 0.6 times that of aluminum. Both Al and Cu have temperature coefficients of resistivity of 0.004°C...
Wednesday, November 17, 2010 at 11:45pm by Trace

Physics
Suppose that you wish to fabricate a uniform wire out of 1 g of copper. (Resistivity = 1.72*10^-8 Ohm-m, density = 8.94*10^3kg/m^3). If the wire is to have a resistance of R = 0.5 ohm and all of the copper is to be used, how long is the wire? a. 1765 m b. 1816 m c. 1.8 m d. 0....
Friday, March 1, 2013 at 12:22pm by John

Physics
(1) 45 micro coulombs of charge is passed through a wire in 35 seconds. How many electrons does this represent? What is the current in the wire? (2) A piece of copper wire has a resistance of 5 Ohms at 20 degrees celsius. If another piece of copper wire at 0 degrees celsius is...
Monday, May 4, 2009 at 1:54pm by Bob

Physics
What length of #22 B&S gauge copper wire is needed to make a resistance of 500 ohms? This is what I came up with but don't think it is correct. looked up diameter for #22 gauge wire = .643 mm and converted to m 6.46 * 10^-4. Used Eq. A = (pi)(d^2)/4 => A = (pi)(...
Friday, September 7, 2012 at 12:43pm by Kevin

Physics
Suppose a straight 1.25 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 multiplied by 10-5 T. What current would the wire ...
Thursday, February 10, 2011 at 6:42pm by Justin

physics
calculate the free electrons of a copper wire having a 0.064 inches diameter and 1000 ft. long?
Thursday, January 20, 2011 at 11:14pm by vic

physics
A solenoid is wound with a single layer of insulated copper wire of diameter 2.800 mm and has a diameter 5.000 cm and is 1.500 m long. Assume that the adjacent wires touch and that the insulation thickness is negligible. what is the inductance per meter(H/m) for the solenoid ...
Sunday, February 21, 2010 at 5:58pm by Andy

physics
A solenoid is wound with a single layer of insulated copper wire of diameter 2.800 mm and has a diameter 5.000 cm and is 1.500 m long. Assume that the adjacent wires touch and that the insulation thickness negligible. what is the inductance per meter(H/m) for the solenoid near...
Sunday, February 21, 2010 at 5:31pm by Andy

Physics
Look up or derive the frequencies of the standing waves of a length of wire, L, clamped at the ends and under tension. What are the similarities and differences between a vibrating string and a resonating pipe? Does the diameter of the wire matter? Does the diameter of the ...
Thursday, February 8, 2007 at 12:00pm by Krys

physics EM
You have a 0.600-m-long copper wire. You want to make an N-turn current loop that generates a 1.30 mT magnetic field at the center when the current is 0.600 A. You must use the entire wire. What will be the diameter of your coil? this doesnt seem that hard but I cant figure ...
Monday, March 31, 2008 at 10:31am by Spencer

physics
1. A solid copper cylinder hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits sound with a fundamental frequency of 300 Hz. The copper cylinder is then submerged in water so that half its volume is below ...
Monday, February 21, 2011 at 11:34am by vijay krishna

physics
A solid copper object hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits sound with a fundamental frequency of 300 Hz. The copper object is then submerged in water so that half its volume is below the ...
Wednesday, February 16, 2011 at 11:42pm by Rachel

Physics
What is the resistance of a 4.00 m length of copper wire having a diameter of 2.00 mm at a temperature of 20 degrees?
Tuesday, May 10, 2011 at 3:52pm by Anonymous

Chemisty
Wire is often sold in pounds spools according to the wire guage number. That number refers to the diameter of the wire. How many meters are in 3-Ib spool of 12 gauge aluminum wire? A 12-guage wire has a diameter of 0.0808 in. Aluminum has a density of 2.70 g/cm^3. (V=3.14r^2L)
Thursday, January 19, 2012 at 10:59pm by love

phys102
a copper wire has a diameter of 1.02mm,the wire carries a constant current of 1.67A,the density of the free electrons is 8.5X10^28 e/m^3.calculate the current density and drift velocity
Saturday, August 14, 2010 at 6:04am by kabelo

physics
The magnetic ﬁeld in a loudspeaker is 0.2 T. The wire consists of 308 turns wound on a 4.12 cm diameter cylindrical form. The resistance of the wire is 8.2 Ω. Find the force exerted on the wire when 15.8 V is placed across the wire. Answer in units of N
Thursday, March 3, 2011 at 8:43pm by Anonymous

physics
A 34.7 cm diameter coil consists of 20 turns of circular copper wire 1.50 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 9.00E-3 T/s. Determine the current in the loop. Determine the rate at which thermal energy is ...
Monday, October 18, 2010 at 10:39am by VJC

physics
A wire of diameter 0.65mm and length 6.0m stretches 10mm when 5.5kg is hung from it. What is the Young's modulus for the wire and what is the effective spring constant for the stretching wire
Thursday, April 19, 2012 at 2:34pm by Kirk

Physics
A small but measurable current of 3.20 E-10 A. exists in a copper wire whose diameter is 0.03 cm. Calculate the electron drift speed (in meters/second).
Saturday, November 10, 2012 at 9:17pm by andrew

physics
A circular steel wire 2.00 m is to stretch no more than 0.25 cm when a tensile force of 400 N is applied to each end of wire. What minimum diameter is required for the wire?
Saturday, August 22, 2009 at 7:53pm by colleen

physic
The resistance of a copper wire of diameter 10mm and length 2m is 15 Ω. Determine the new resistance if i) the length is doubled and the diameter halved ii) the length increases by three fold and the diameter doubled iii) the length decreases by two fold and the ...
Friday, February 11, 2011 at 5:13am by hans

physics
A potential difference of 12 V produces a current of 0.90 A in a piece of copper wire. What is the resistance of the wire?
Tuesday, March 22, 2011 at 10:22pm by maria

physics
A potential difference of 12 V produces a current of 0.90 A in a piece of copper wire. What is the resistance of the wire?
Sunday, March 20, 2011 at 3:51pm by maria

Algebra
The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. a wire with length of 200 inches and a diameter of one- quarter of an inch has a resistance of 20 ohms. find the electrical resistance in a 500 inch wire withe the ...
Sunday, January 9, 2011 at 7:16pm by Mike Bedell

Physics
A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire. I did 10.6E-8/1.59E-8 but am not getting correct answer?
Friday, February 10, 2012 at 9:06am by jason

Physics
A weight of 40N was attached to the end of a wire during modulus experiment, if the length of the wire is 4m and the diameter is 0.44mm and the extension recorded is 0.30mm. calculate the stress and strain of the wire?. take[Pi=3.142
Saturday, January 22, 2011 at 4:42am by Ochuko

PHYSICS
A copper wire and an aluminium wire have length's in the ratio 3:2.diameters n the ratio 2:3 AND FORCES APPLIED IN THE RATIO 4:5 find the ratio of increase in length of the two wires.(Y FOR COPPER =1.1*1O^11 N/m^2,Y for aluminum=0.70*10^11 N/m^2). ans: 1)189:110
Monday, February 4, 2013 at 1:52am by kalawathi

physics
A light rigid bar is suspended horizontally from two vertical wires, one of steel and one of brass. Each wire is 2.00m long. The diameter of the steel wire is 0.60mm and the length of the bar AB is 0.20m. When a mass of 10.0kg is suspended from the centre of AB the bar remains...
Sunday, March 28, 2010 at 3:03pm by Edwin

physics
What is the resistance of 6.2mi of copper wire with a diameter of 0.57mm ? The answer is suppose to be in Kohm for the resistance i got 656.9 ohm but dont know how to convert it in to kohm
Thursday, January 27, 2011 at 8:05pm by Cassie

Physics
the number of turns: lenght/diameter of wire. Can one get them any closer than touching? In this case, since there are four layers, N=4*.05/diameter so given N, you can calculate diameter.
Sunday, April 13, 2008 at 2:31pm by bobpursley

chemistry
A reaction is run in which dissolved silver ions are reduced in the presence of solid copper. THis reaction can be used to produce a silver coating on a copper wire frame. .249g of copper wire was placed in a 100 mL of a 0.500 M solution of silver nitrate. What is the maximum ...
Tuesday, April 19, 2011 at 10:06pm by mmmmm

Statics
An aluminum wire has a diameter of d in. Determine the minimum diameter D of the coil in which the wire can be wound without exceeding a bending stress of 30,000psi
Monday, April 23, 2012 at 1:45pm by Mary

physics
A piece of copper wire has a resistance per unit length of 6.45*10-3 /m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.140 m. The ends of the wire are connected to a 12.0 V battery. Find the magnetic field strength at the center of the coil.
Monday, February 11, 2008 at 10:25pm by rick

physics
in the searler's metod to determine the young's modulus of a wire , a steel wire of length 156cm and diameter 0.054cm is taken as experimental wire. the average increase in length for 1 1/2 kg wt is found to be o.o5o cm.Then young's modulus of the wire? ANS: 1.)2....
Monday, February 4, 2013 at 1:42am by kalawathi

Physics
A copper wire is 7.00 m long and has a cross-sectional area of 1.00 10-4 m2. This wire forms a one turn loop in the shape of a square and is then connected to a battery that applies a potential difference of 0.200 V. If the loop is placed in a uniform magnetic field of ...
Thursday, November 11, 2010 at 10:07pm by Max

Physics
A copper wire 0.40m long carries a current of 6.0A and weighs 0.35N. What strenght magnetic field is required to balance the weight of the wire?
Wednesday, May 5, 2010 at 3:49pm by Javier

Physics
A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire.
Thursday, February 9, 2012 at 1:43pm by jason

Chemistry (algebra I problem)
I feel really dumb because I cant figuer out this simple algebra I problem... 84. The diameter of a copper (Cu) atom is roughly 1.3 x 10^-12 m. How mnay times can you divide devenly a piece of 10-cm copper wire until it is reduced to two seperate copper atoms? (Assume there ...
Monday, June 28, 2010 at 3:58pm by Kate

chemistry
A 55.0-g piece of copper wire is heated, and the temperature of the wire changes from 19 degrees C to 86 degrees C. The amount of heat absorbed is 343 cal. What is the specific heat of copper?
Monday, August 4, 2008 at 5:34pm by kayla

Chemistry
I don't think anyone here will be willing to write a three or four page report but allow me to give you some hints. You really don't know the purity of many of the salts of copper; however, starting with copper wire or copper turnings might be a good possibility. ...
Tuesday, October 12, 2010 at 7:52pm by DrBob222

Physics: Diameter of a nichrome wire
If 49 m of nichrome wire is to have a resistance of 13.0 ohms at 20°C, what diameter wire should be used? I've done this: (108e-8)(49)/10.0 ohms = 5.29e-6m^2 Then 5.29e-6m^2/pi then r = sqrt(1.68e-6m^2) and got .00129 = 1.29e-3 1.29mm r=2(1.29mm) = 2.58mm But this is ...
Thursday, September 9, 2010 at 5:24pm by Sar

physics
One mile of copper wire has a resistance of 13 Ω. Using the wire to electrically connect two terminals that are half a mile apart, rank the following situations in order of increasing resistance. I. Use the full length of wire. II. Cut the wire in half and use only ...
Monday, April 16, 2012 at 6:04pm by BOBBY

Physics
I made a pan flute with copper tubing (3/4 in diameter) to correspond to the following notes/lengths: C - 15.4cm D - 13.6cm E - 12.0cm G - 9.8cm A - 8.7cm The original instructions called for PVC pipe at 1/2in diameter, so the notes are off. How do I change the measurements of...
Saturday, January 29, 2011 at 7:29pm by Anonymous

physics
By what factor is the resistance of a copper wire changed when its temperature is increased from 20¢ªC to 120¢ªC? (the temperature coefficient of resistivity for copper = 3.9 ¢¥ 10‑3/C¢ª)
Monday, February 7, 2011 at 2:01pm by Anonymous

physics
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11~ 10-8 ƒ¶m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 ƒ...
Thursday, November 15, 2012 at 7:44pm by Amber

physics
Find the cross-sectional area of copper wire that is 55.4 m long and has a resistance of 0.943 ohms. The resistivity of copper is 1.79 x 10^-8 ohms m.
Thursday, April 28, 2011 at 8:11pm by katie

Physics
A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.70 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m. What is the average ...
Thursday, October 4, 2007 at 1:29pm by Mary

Physics (repost)
I made a pan flute with copper tubing (3/4 in diameter) to correspond to the following notes/lengths: C - 15.4cm D - 13.6cm E - 12.0cm G - 9.8cm A - 8.7cm The original instructions called for PVC pipe at 1/2in diameter, so the notes are off. How do I change the measurements of...
Sunday, January 30, 2011 at 12:35pm by Anonymous

Physics II
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 10-8 · m, and the density is 7.67 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 . What length ...
Thursday, March 7, 2013 at 4:08pm by Stephanie

physics
An insulated copper wire is wrapped around an iron nail. The resulting coil of wire consists of 240 turns of wire that cover 1.8 cm of the nail, as shown in the figure . A current of 0.61 A passes through the wire. if the ferromagnetic properties of the nail increase the field...
Thursday, March 22, 2012 at 5:34pm by physics im dying

Ap physics b
A piece of copper wire is formed into a single circular loop of radius 11 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.65 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m. What is the average ...
Wednesday, April 6, 2011 at 9:23pm by christina

physics
A long, straight wire has a 12.1 A current flowing in the positive x-direction, as shown in the figure. Close to the wire is a square loop of copper wire that carries a 2.23 A current in the direction shown. The near side of the loop is d = 57.1 cm away from the wire. The ...
Monday, December 10, 2012 at 7:42am by Anonymous

physics
A certain copper wire has a resistance of 12.0 \Omega.At what point along its length must the wire be cut so that the resistance of one piece is 5.0 times the resistance of the other?
Thursday, September 23, 2010 at 4:46pm by rabiya

physics
Given by, lenth (L)=2.5mm,Diameter of copper wire =1.3mm,R=?,A=? A=S=PIE(D/2)squre s=3.14*(1.3/2)square =3.14x0.65x0.65 mm =3.14x0.4225 mm =1.32665 mm A=1.32665mm R=l/A =2.5/1.32665 =1.9x10-2 ohm
Tuesday, February 15, 2011 at 8:51pm by ravi

engineering physics 2
A 19 m long piece of wire of density 8.34 g/m3 has a diameter of 12.593 mm. The resistiv- ity of the wire is 1.7e-8(ohm)(m) at 20 degrees celsius. The temperature coefficient for the wire is 0.0038(degrees celsius)^-1. Calculate the resistance of the wire at 20degrees Celsius...
Thursday, February 28, 2008 at 2:56pm by David

Algebra II
The resistance of a wire is inversely proportional to the square of its diameter. If an AWG (American wire gauge) size 12 conductor (0.0808-in. diameter) has a resistance of 14.8, what will be the resistance of an AWG size 10 conductor (0.1019-in. diameter) of the same length ...
Monday, November 21, 2011 at 11:27am by Arielle

maths-mensuration
The boy having a gold coin of diameter 2cm and thickess 2mm to a goldsmith for melting and drawing into a wire of diameter 1mm . the gold smith gave back a wire of gold of length 76cm with diameter 1mm. if the wastage allowed in melting could be a maximum of 5% of the total ...
Sunday, March 10, 2013 at 11:36pm by anoynomous

Physics - Please Help!
I really need help on these questions because I have a test tomorrow and don't understand how to do them. 1) A wire of diameter 0.6mm is placed in the path of light coming from a laser. Light diffracts around both sides of the wire; the diffracted waves then interfere with...
Tuesday, June 10, 2008 at 6:26pm by Alex

Physics
What is the resistance of a 4.00 m length of copper wire having a diameter of 2.00 mm at a temperature of 20 degrees? R= ? L= 4.00 m resistivity= 1.72 * 10^-8 ohm-meters A= ? A= pi*r^2 change 2 mm to .002m, square it and multiply by 3.14 I got .00001256 Is this right so far?
Monday, May 9, 2011 at 7:13pm by Anonymous

Physics
A piece of copper wire has a resistance per unit length of 5.95 10-3 /m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.200 m. The ends of the wire are connected to a 12.0 V battery. Find the magnetic field strength at the center of the coil. In ...
Thursday, September 27, 2007 at 11:06pm by Mary

physics, university
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11 x 10-8 ohms/m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 ohms. a) What ...
Monday, November 19, 2012 at 2:33pm by Emma

Math
The resistance(r)of a wire varies directly as the length(L)of the wire and inversely as the square of the diameter(d). If the resistance is 9ohms in 50ft of wire that has a diameter of 0.05in, find the resistance in 50ft of a similar wire that has a diameter of 0.02in. ...
Friday, September 22, 2006 at 3:04am by Amber

physics
the resistance of 100.0cm of constantan wire whose diameter of cross-section is 0.55m is 5ohm find the resistivity of constantan wire
Tuesday, August 4, 2009 at 3:57pm by matrix school 2

Chem.
What if I did this. - add copper wire then wouldn't the silver crystals attach onto the copper - then the copper would oxidize and you're left with silver would that work?
Monday, November 24, 2008 at 11:00pm by Lena

physics,
A 4.0kg object is supported by an aluminum wire of length 2.5 m and diameter 1.8 mm How much will the wire stretch? I need the breakdown of how this is being solved so I can figure it out in the future. Even just a formula will do
Tuesday, April 12, 2011 at 7:13pm by Dorian

physics
It is the question if you say it is. Partially submerging the copper object will reduce the tension in the steel wire. There will be a buoyancy force equal to half the volume of the copper object multiplied by the density of water. Let V be the volume of the copper and g be ...
Wednesday, February 16, 2011 at 11:42pm by drwls

physics
Copper has one free conducting electron per atom, in the metallic state. The other 28 electrons remain bound. For the number of atoms, compute the mass of the wire and divide it by the mass of one copper atom. You will need to look up the density of copper. The mass of one ...
Thursday, January 20, 2011 at 11:14pm by drwls

physics
A 36 cm long copper wire carries a current of 6.0 A and weighs 0.45 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?
Sunday, March 10, 2013 at 10:09am by Jeff

physics
A wire is made of a material with a resistivity of 4.85109 × 10−8 Ω · m . It has length 5.57436 m and diameter 0.36396 mm . What is the resistance of the wire? Answer in units of Ω
Tuesday, May 7, 2013 at 8:29pm by Anonymous

college physics
so now at 28 gage wire is listed to be 66.17 ohms per 1000 ft of Copper Wire at 25 degrees C. Then the coil has 15.5 ohm resistance so 15.5 ohms * (1000 ft / 66.17 ohms) * (12 in / ft) = 2.81 in. Then we got diameter of 2 inch so 2*pi*1 = 2pi inches for circumference. Finally...
Sunday, April 4, 2010 at 8:43pm by Mike

math
Due to dwindling reserves of copper ore, the price of a 100-foot spool of copper wire increased 20% this year to $144. What was the old price (last year's price) for a 100-ft spool of wire? $130 $145 $120 $115
Wednesday, January 14, 2009 at 12:44pm by Dawn

science
A piece of copper wire and a 50lb block of copper have the same density. Explain how can this be true.
Tuesday, February 5, 2013 at 1:04pm by teacher1

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