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April 16, 2014

Search: Physics: Diameter of a copper wire

Number of results: 113,977

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? (m)
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)? What ...
Wednesday, February 17, 2010 at 6:09pm by Anthony

Physics
A copper wire of diameter 0.30mm and length 1.50m is joined to another steel wire of same diameter and length 1.20m. The copper part of the double wire is hung vertically to a fixed point, while a small weight is connected to the lower end of the steel part. Joining the two ...
Thursday, October 31, 2013 at 1:14pm by Cali

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? m? 2) A rectangular block of copper...
Monday, October 4, 2010 at 9:22pm by Max

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? m? 2) A rectangular block of copper...
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 free...
Monday, September 19, 2011 at 4:23pm 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 free...
Monday, September 19, 2011 at 4:29pm 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 6:57pm 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 9:44pm 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

phys102
A copper wire has a diameter dCu = 0.0517 cm, is L = 2.85 m long, and has a density of charge carriers of 8.501028 electrons/m3. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a diameter dAl = 0.0267 cm and density of charge ...
Saturday, August 14, 2010 at 6:04am by Aysah

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 diameter will...
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
What is the resistance of a 7.4-m length of copper wire 1.2mm in diameter? The resistivity of copper is 1.6810−8Ω⋅m. R=_________
Friday, February 7, 2014 at 8:30pm by IM

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 10-5Ωm and the ...
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 your wire?
Wednesday, February 17, 2010 at 6:17pm by Anthony

Physics
Suppose a straight 1.60mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗ , which is horizontal, perpendicular to the wire, and of magnitude 4.210−5T . What current would the wire carry?
Saturday, February 22, 2014 at 11:26am by Anonymous

Physics
A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla?
Thursday, December 12, 2013 at 8:28am by Anonymous

physics
A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla?
Wednesday, December 18, 2013 at 9:26pm by akameno

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 11:13am by Rachel

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

College Physics II
A steel wire and a copper wire, each of diameter 2.000 mm, are joined end to end. At 48.0C, each has an unstretched length of 2.000 m. The wires are connected between two fixed supports 4.000 m apart on a tabletop. The steel wire extends from x = −2.000 m to x = 0, the ...
Tuesday, September 3, 2013 at 11:02am by Andrew

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 212
Two copper wires have equal lengths, but the diameter of one is three times that of the other. a) The resistance of the thinner wire is _____ times that of the thicker wire: (Prove your work) 1) 3 2) 1/3 3) 9 4) 1/4
Monday, January 6, 2014 at 10:44am by Marcu

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 20C. 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 0.004C1. What is ...
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
You have a piece of copper with a volume of 2 cm3, and wish to form a wire having a resistance of 0.15 . How long should the wire be if the resistivity of copper is 1.72 ~ 10-8 . m?
Monday, July 15, 2013 at 3:31am by tom

magnetism
A straight copper wire that is 1 millimeter in diameter carries a current of 20 milliamps. What the magnitude of the largest magnetic field created by this wire in Tesla?
Wednesday, December 18, 2013 at 6:56am by Hans

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

magnets
A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whats the magnitude of the largest magnetic field created by this wire in Tesla?
Wednesday, December 18, 2013 at 11:37am by anton

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)(6.43 * 10^-4...
Friday, September 7, 2012 at 12:43pm by Kevin

magnetism!!
A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla? pls help :(
Wednesday, December 18, 2013 at 9:23pm by akameno

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 carry? I want to...
Thursday, February 10, 2011 at 6:42pm by Justin

physics
Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and resistances of the two wires compare? CHECK ALL THAT APPLY Wire A and wire B have the same resistance. Wire A has twice the resistivity of wire B. Wire...
Friday, February 7, 2014 at 8:27pm by Anonymous

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 negligible. what is the inductance per meter(H/m) for the solenoid near...
Sunday, February 21, 2010 at 5:31pm 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 is negligible. what is the inductance per meter(H/m) for the solenoid ...
Sunday, February 21, 2010 at 5:58pm 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
anyone with this q: A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whats the magnitude of the largest magnetic field created by this wire in Tesla? I think B=uo.I/(2*pi*r)=8*10^-6 B at the perimeter, but I used r^2 instead of r, so I ...
Sunday, December 15, 2013 at 5:35pm by flo

Physics
anyone with this q: A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whats the magnitude of the largest magnetic field created by this wire in Tesla? I think B=uo.I/(2*pi*r)=8*10^-6 B at the perimeter, but I used r^2 instead of r, so I ...
Thursday, December 12, 2013 at 8:29am by flo

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

Chemistry
Earth's oceans have an average depth of 3800 m, a total area of 3.63 108 km2, and an average concentration of dissolved gold of 5.8 10-9 g/L. (a) How many grams of gold are in the oceans? (b) How many cubic meters of gold are in the oceans? Assuming the price of gold is $392....
Sunday, August 25, 2013 at 4:42pm by Anonymous

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
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

magnetic field
A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla?
Monday, December 16, 2013 at 2:09am by marie

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

physics
A copper wire has a diameter of 1.532 mm. What magnitude current flows when the drift velocity is 0.500 mm/s?
Saturday, September 14, 2013 at 10:51pm by Justin

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

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

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
Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.835. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ωm, and that of aluminum to be 2.82 x 10-8 Ωm.
Wednesday, June 5, 2013 at 6:48pm by Tim

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

physics
When exposed to sunlight, a hole in a sheet of copper expands in diameter by 0.154% compared to its diameter at 74∘F. Part A What is the Celsius temperature of the copper sheet in the sun?
Wednesday, December 4, 2013 at 12:37am by Help! finals next week

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 diameter...
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?
Sunday, March 20, 2011 at 3:51pm 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?
Tuesday, March 22, 2011 at 10:22pm 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...
Saturday, March 27, 2010 at 10:50am by Edwin

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.)2.002* 10^11 N/m
Monday, February 4, 2013 at 1:42am by kalawathi

physics
Find the diameter of an 18 m(L) long steel wire that will stretch no more than.009 m AL when a load stress of 3800 N is hung on the end of the wire. The Young's Modulus for steel wire is 200 x 109 N/m2?
Friday, December 27, 2013 at 1:40pm by farid

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

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

Physics
A piece of copper wire has a resistance per unit length of 5.50 x 10^-3 Ω/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 ...
Thursday, October 3, 2013 at 12:52pm by Anonymous

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
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. Copper wire ...
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 20C, 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 wrong. ...
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 one ...
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 20C to 120C? (the temperature coefficient of resistivity for copper = 3.9 10‑3/C)
Monday, February 7, 2011 at 2:01pm by Anonymous

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
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 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 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 . a) What length of...
Thursday, November 15, 2012 at 7:44pm by Amber

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

Math
a man has a roll of 200m copper wire, he wires on room using 17m, and the next room using 83m of copper wire. How many meters is left on the roll after he does the two rooms?
Friday, January 10, 2014 at 11:42am by Jerry

physics
As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with uniform cross-section. You use up 95% of the nichrome and make a wire with a resistance of 0.840 Ω. The resistivity of nichrome is 1.00 10-6 Ω m and its density is 8.31 ...
Sunday, September 15, 2013 at 8:02pm by Justin

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 of wire ...
Thursday, March 7, 2013 at 4:08pm by Stephanie

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

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