Consider two copper wires with the same crosssectional 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
47,983 results
physics
Consider two copper wires with the same crosssectional 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

Physics
The figure shows a cross section of three parallel wires each carrying a current of 15 A. The currents in wires A and B are into paper, while that in wire C is out of the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0m

physics
The filament in an incandescent light bulb is made from tungsten (resistivity 5.6 x 108 Ù·m). The light bulb is plugged into a 120V outlet and draws a current of 2.36 A. If the radius of the tungsten wire is 0.00464 mm, how long must the wire be?

physics helpt please?
A copper wire or length 2.0M, with crosssectional area 7.1x10^6 m^2 and youngs modulus of 11x10^10 N/m^2 has a 200 kg load hung on it. what is its increase in length? F/A=Y* change in L/Length = (200*9.8)/7.1x10^6=11x10^10* delta L/2m? am i even setting

math
a conductor having a cross sectional area of 0.00161 sq. in. carries a current of 4.5 amp. Calculate the electron velocity, assuming the wire to be a copper.

Physics
A copper wire with a length 2.0m, cross sectional area 7.1x10^6 m^2 and young's modulus 11x10^10 N/m^2 has a 200kg load hung on it. What is its increase the length? (g=9.8 m/s^2) im not sure how to start this problem or what equation to use, can some one

physics
A 4.0mlong steel wire has a crosssectional area of 0.050cm2. Its proportional limit has a value of 0.0016 times its Young's modulus. Its breaking stress has a value of 0.0065 times its Young's modulus. The wire is fastened at its upper end and hangs

Electrical
a conductor having a crosssectional area of 0.00161 sq.in. carries a current of 4.5amp. calculate the electron velocity, assuming the wire to be (a) copper, (b) aluminum.

physics
If the current in a wire of a CD player is 5.00 mA, how long would it take for 2.00 C of charge to pass through a crosssectional area of this wire?

Physics!! Help!!!!!
A wire of length L and crosssectional area A has resistance R. What will be the resistance R_stretched of the wire if it is stretched to twice its original length? Assume that the density and resistivity of the material do not change when the wire is

physics
If a metal wire carries a current of 130 mA, how long does it take for 3.50×10 20 electrons to pass a given crosssectional area anywhere along the wire? The magnitude of the charge on an electron is 1.6 × 10 −19 C. Answer in units of s.

Physics
A brass wire with Young's modulus of 9.20 1010 Pa is 2.5 m long and has a crosssectional area of 4.6 mm2. If a weight of 5.2 kN is hung from the wire, by how much does it stretch?

College Physics II
A steel wire and a copper wire, each of diameter 2.000 mm, are joined end to end. At 48.0°C, 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 =

Physics
The drawing shows two crates that are connected by a steel (Young's modulus 2.0 x 1011 N/m2) wire that passes over a pulley. The unstretched length of the wire is 1.8 m, and its crosssectional area is 1.4 x 105 m2. The pulley is frictionless and

Physics
Two wires have the same length and the same resistance but are made up of different materials. The resistivities of these materials are 3.97 Ù and 1.97 Ù. Obtain the ratio of the smaller crosssectional area to the greater crosssectional area.

phys
Water flows steadily from an open tank into a pipe as shown in the figure. The elevation of the top of the tank is 12.3 m, and the elevation at the pipe is 3.80 m. The initial crosssectional area of the pipe (at point 2) is 5.60×10−2 m^2; and at where

Physics
A copper wire is 7.00 m long and has a crosssectional area of 1.00 104 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

Physics  Voltage across a wire of unknown length
Four copper wires of equal length L are connected to a 100V source. Their crosssectional area are 1cm^2, 2cm^2, 3cm^2, and 4cm^2. Find the voltage across the 3cm^2 wire. Leave your answer in terms of L, it should cancel out.  So I tried using and

College Physics
A wire P has resistance R. If the wire is stretched and its length is increased by 10%, what would be the percentage change in its resistance? (Assume the density of the wire remains constant) A)  10% B) 0 % C) 10% D) 20% My thoughts: Since resistance is

Physics
A 100 m long wire with a crosssectional area of 4 mm2 has a resistance of 6 ohms. What is the resistivity of the material of the wire in Ùm?

Physics
Two cylindrical copper wires have the same mass and are at the same temperature. Wire A is twice as long as wire B. The resistance of wire A is related to that of wire B by a) RA = RB/4 b) RA = RB/2 c) RA = RB d) RA = 2RB e) RA = 4RB

physics
An 8m long copper wire with a crosssectional area of 1.0 x 10^4 m^2, in the sshape of square loop, is connected to a .10V battery. If the loop is placed in a uniform magnetic field of magnitude .4T, what is the maximum torque that can act on it? The

physics
a wire whose crosssectional area is 4mm^2 is stretched by 0.1 mm by a certain load.if a similar wire double the area of crosssection is under the same load,then then elongation would be ans: 1)0.05mm

physics  really dnt get this at all
A total charge of 25 mC passes through a crosssectional area of a nichrome wire in 10 s. How many electrons pass through the crosssectional area in 16 s? Choose one answer. a. 2.5 x 1017 electrons b. 2.5 x 1019 electrons c. 2.5 x 1016 electrons d. 2.5 x

As Physics
Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2

science/physics
A heatconducting rod consists of an aluminum section, 0.20 m long, and a copper section, long. Both sections have a crosssectional area of The aluminum end of the rod is maintained at a temperature of , while the copper end is maintained at What is the

PHYSICS
Two wires have the same crosssectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)1 and a resistivity of 5.00 x 107Ω m. For the second, the temperature

Physics
A wire of length 100cm and crosssectional area of 2.0 x 103cm2 has a resistance of 0.10 Ω. Calculate its electrical conductivity.?

mechanics of materials
Select the correct answer.The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. A different material having a Young's modulus half that of steel B half the cross sectional area of

physics
A wire of length 100cm and crosssectional area 2.0*103cm2 has a resistance of 0.1 ohms. calculate it's electrical conductivity?

physics
Four copper wires of equal length are connected in series. Their crosssectional areas are 0.96 cm^2, 2.02 cm^2, 2.90 cm^2, and 5.06 cm^2. A potential difference of 116 V is applied across the combination. Determine the voltage across the 2.02 cm^2 wire.

physics
A net charge of 47 mC passes through the crosssectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the crosssectional area in 1.0 min? 2 . electrons I got 9.3e+22 for B but its wrong

Physics
A total charge of 16ìC passes through a crosssectional area of a nichrome wire in 4 s. How many electrons pass through the crosssectional area in 16 s? This has to do with Electric current and so i know that means 16ìC = 16 x 10^6 = 1.6x10^5.

physics
In constructing a large mobile, an artist hangs an aluminum sphere of mass 6.0kg from a vertical steel wire 0.50m long and 2.5 × 10^3 cm^2 in cross sectional area. On the bottom of the sphere he attendes a similar steel wire, from which he hang a brass

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

physics
Highvoltage power lines are a familiar sight throughout the country. The aluminum wire used for some of these lines has a crosssectional area of 4.7 104 m2. What is the resistance of ten kilometers of this wire?

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 5.8 109 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

Physics
The density of copper is 9.8×10^3 and the density of gold is1.9×10^4. When the two wires of these two metals are held under the same tension the speed in the gold wire is found to be half of that of the copper. What is the ratio of the diameters of the

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

physics
Find the crosssectional 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.

Chemstry
A 4.1089 g piece of aluminum wire with a circular cross section is 42.06 cm long and has density of 2.6989 g/cm3. What is the volume of the wire and the cross sectional area of the wire in cm2?

College Physics
Two copper wires have equal crosssectional areas and lengths of 2.4m and 1.3m, respectively. What is the ratio of the current in the shorter wire to that in the longer one if they are connected to the same power supply? I1.3/I2.4 =

Physics
A wire of crosssectional area 5.00x10^6 m^2 has a resistance of 1.75 ohm. what is the resistance of a wire of the same material and length as the first wire, but with a crosssectional area of 8.75x10^6 m^2? I really want to understand what to do here,

physics
Four copper wires of equal length are connected in series. Their crosssectional areas are 0.96 cm^2, 2.02 cm^2, 2.90 cm^2, and 5.06 cm^2. A potential difference of 116 V is applied across the combination. Determine the voltage across the 2.02 cm^2 wire.

physics
How much charge passes through a crosssectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C

Physics
The filament in an incandescent light bulb is made from tungsten (resistivity 5.6 x 108 Ù·m). The light bulb is plugged into a 120V outlet and draws a current of 2.36 A. If the radius of the tungsten wire is 0.00464 mm, how long must the wire be?

sciencecollege physics
2. A certain wire of length L, crosssectional area A is extended by an amount ‘e’ by a force F. Given that the young’s modulus of the material of the wire is E, Show that the; a. Energy stored in the wire is given by the expression (5) b. Energy per

physics A
A net charge of 47 mC passes through the crosssectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the crosssectional area in 1.0 min? 2 . electrons

physics
A net charge of 47 mC passes through the crosssectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the crosssectional area in 1.0 min? 2 electrons

physics
A net charge of 47 mC passes through the crosssectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the crosssectional area in 1.0 min? 2 electrons

physics
How much charge passes through a crosssectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C Work equation?

Physcis
A bird lands on a bare copper wire carrying a current of 27 A. The wire is 8 gauge, which means that its crosssectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 7.2 cm.

Physics
A bird lands on a bare copper wire carrying a current of 27 A. The wire is 8 gauge, which means that its crosssectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 7.2 cm.

physics
If a metal wire carries a current of 79 . 0 mA, how long does it take for 7.90 × 10 20 electrons to pass a given crosssectional area anywhere along the wire? The fundamental charge is 1 . 602 × 10 − 19 C. Answer in units of s

Physics
Two cylindrical copper wires have the same mass and are at the same temperature. Wire A is twice as long as wire B. The resistance of wire A is related to that of wire B by : a) RA = RB/4 b) RA = RB/2 c) RA = RB d) RA = 2RB e) RA = 4RB

science (physics)
A copper wire with cross sectional area 0.00030cm^2 is to be used in lifting a 100g object.How fast can the object be accelerated if the wire is to stretch not more than 0.10%? What i know is that first find the elongation & then that will help to find

algebra
A copper conductor 130metrrs long hasa resistance of 4.30ohms. If the resistivity of a copper is 1.42*10ohms determine the cross sectional area of the conductor in mmsquared

physics
A potential difference of 2.0 V is applied across a wire of cross sectional area 2.5 mm2. The current which passes through the wire is 3.2 × 103 A. What is the resistance of the wire?

Physics
Three conducting straight wires (though insulated from each other) are each 2 m long. They are electrically connected to each other only at their ends points A and B. AB = 2 meter. The wires are cylindrical. One is made of copper, one of aluminum and one

physics
determine the energy stored in a 2m long wire of cross sectional area 0.5mm^2 kf the force of 50N is applied to it.

Physics
A copper wire that has a crosssectional diameter of 3.000 mm has a current of 1.141 A. (a) What is the current density? (b) What is the total charge that passes by a certain location along the wire in 1.500 s?

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

physics
A total charge of 25 mC passes through a crosssectional area of a nichrome wire in 10 s. What is the current in the wire? Choose one answer. a. 2.5 A b. 2.5 mA c. 25 mA d. 2.5 µA

physics
A given wire of resistance 10ohm has a length of 5m and a cross sectional area of 4.0*10^3m^2,calculate the conductivity of the wire . please help me out I don't understand it

Physics
A wire with cross sectional area 1.00 cm2 stretches 0.500% of its length when it is stretched with a tension of 20.0 N. What is the Young's modulus of this wire?

Physics
Two current carrying wires cross at right angles as indicated in the figure. If the wires are not restrained, what statement best describes the motion of the wires? Hint: To help you visualize the situation, draw first the magnetic field that Wire 1 makes

Physics
Two current carrying wires cross at right angles (like a + sign). Wire 1 has current directed horizontally to the left. Wire 2 has current directed vertically up. If the wires are not restrained, what statement best describes the motion of the wires? A)

sciencce
2. A certain wire of length L, crosssectional area A is extended by an amount ‘e’by a force F. Given that the young’s modulus of the material of the wire is E, Show that the; a. Energy stored in the wire is given by the expression (5) b. Energy per

physics
A graphite rod is 1.0 m long, with a 1.0 cm by 0.5 cm rectangular cross sectional area. What is the electrical resistance between its long ends? What must be the diameter of a circular 2.0 m long copper rod if its resistance is to be the same?

Physics
Two straight and parallel wires of length 1.0 m carry a current  the first carries a currecnt of 9.0 A while the other wire carries a current of 4.0 A. What distance must separate the two straight and parallel copper wires if the force between them is to

Physics
A wire 3.00 m long and .450 mm2 in crosssectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?

Physics
A wire 3.00 m long and .450 mm2 in crosssectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?

physics
Two wires have the same crosssectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)1 and a resistivity of 5.00 x 107Ω m. For the second, the temperature

PHYSICS 2
Two wires have the same crosssectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)1 and a resistivity of 5.00 x 107Ω m. For the second, the temperature

chemistry stoichiometry
My chem teacher gave us this problem Twelvegauge 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

physics
Two wires have the same crosssectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00480 (C°)1 and a resistivity of 4.90 x 105Ω m. For the second, the temperature

physics PLEASE HELP
Two wires have the same crosssectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00480 (C°)1 and a resistivity of 4.90 x 105Ω m. For the second, the temperature

Physics 
Q.1. Two wires each of length 40 m and diameter 2.6 mm, are connected in series. A potential difference of 50 V is applied between the ends of the composite wire. The resistances the wires are 0.13 Ω and 0.75 Ω, respectively. Determine: i) the current

science
Calculate the resistance of a copper wire cross section area 2*10_2 the resistivity of wire is 1.67*10_ohm metre

Physics
A net charge of 73 mC passes through the crosssectional area of a wire in 9 s . What is the current in the wire? The fun damental charge is 1.602 × 10−19 C.

physics
A net charge of 73 mC passes through the crosssectional area of a wire in 9 s. What is the current in the wire? The fundamental charge is 1.602 × 10−19 C.

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

physics
A piece of gold wire is used to form a circular loop of radius 12.3 cm. The wire has a crosssectional area of 11.1 mm^2. Points A and B are 90.0° apart. Find the resistance between points A and B.

Science
Let a wire of length l and a cross sectional area A be expended through e by a force F

Physics
Highvoltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 108 m) wire used for some of these lines has a crosssectional area of 4.4 x 104 m2. What is the resistance of 12 kilometers of this wire?

Electrotechnics
The field coil of a machine is wound with 700 turns of copper wire of cross sectional area 0,375mm^2 .The mean length per turn is 400mm and thr resistivity of copper is 16×10^3 micro ohm at 0 degrees Celsius. Determine the resistance of the coil at

Physics
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 5 £gC/m and are 8 cm apart. What is the magnitude and direction of the electric field at a point midway between them and 49 cm above the plane

Physics Resistance
A piece of wire of resistance, R and uniform cross sectional area, A is cut into four equal parts and bundled together to form a thicker wire. The resistance of the bundled wire is: A 16R B 1/4R C 4R D 1/16R It's either 16 or 1/16 im not sureee. So I need

Physics, URGENT!!!
We consider tobacco virus diffusing along a 0.47 m long tube filled with water. The crosssectional area of the tube is unknown. The diffusion coefficient is found in Table 10.5, p. 319 in the textbook. A total amount of virus of 2.6 x 1016 kg is

College Physics
A 30.0 m steel wire and a 22.0 m copper wire, both with 1.00 mm diameters, are connected end to end and stretched to a tension of 170 N. How long does it take a transverse wave to travel the entire length of the two wires? (Take the mass per unit length of

maths help
Hi MY question is if a cylinder has a volume of 72cm cubed and a crosssectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume = (crosssectional area) x

Chemistry
When a pair of copper wires are connected to the (+) and (–) terminals of a 9–V battery and immersed in a solution containing I ions, one of the wires becomes coated with I2. Besides simply wiping off the wire, how else could you remove the I2

physics
Water flows steadily from an open tank into a pipe. The elevation of the top of the tank is 10.2 m, and the elevation at the pipe is 3.90 m. The initial crosssectional area of the pipe is 6.40×10^−2 m; and at where the water is discharged from the

physics
calculate the resistivity of a wire of length 2m and crosssectional area 0.004cm square if resistanceis 3.0 ohm?

strength of materials
The composite bar BCD in the figure is fixed at the wall B (x=0), and has constant cross sectional area A_0. The bar is composed by joining, at section C, two segments (BC and CD) of equal length L. Segment CD is homogeneous, made of copper. Segment BC is

mechanics of materials
The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using:which of the following is correct A. a different material having a Young's modulus half that of steel B half the cross sectional

mechanics
The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. a different material having a Young's modulus half that of steel B half the cross sectional area of the steel wire C half the

Physics/Electricity
An aluminum wire carrying a current of 9.0 A has a crosssectional area of 7.0X10^6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electrons are supplied by each atom.)

Physics
The composite bar BCD in the figure is fixed at the wall B (x=0), and has constant cross sectional area A_0. The bar is composed by joining, at section C, two segments (BC and CD) of equal length L. Segment CD is homogeneous, made of copper. Segment BC is

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?