# 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)

1. 👍 0
2. 👎 0
3. 👁 1,219
1. I would change 0.0808 inches to cm and 3 pounds to grams. 2.54 cm = 1 inch and 453.6 g/lb, then 0.0808 in x (2.54 cm/in) = ?
and 3 pounds x (453.6 g/lb)= ?

The area of the wire is pi*r^2.

Volume = pi*r^2*length of wire
So if you know volume, pi, and r you can calculate length. Volume = mass/density = mass (grams)/density.
Solve for length in cm and convert to m

1. 👍 0
2. 👎 0
2. so i would 0.0808 in x (2.54 cm/in) = 2.6E-1
3 pounds x (453.6 g/lb)= 1.4E3
SO THAN WHAT DO I DO NEXT

1. 👍 0
2. 👎 0
3. 0.0808 2.54 is not 0.26 and you shouldn't round to two places. You are allowed 3. My calculator reads about 0.205 cm. That's the diameter so take half of that to arrive at the radius. You've rounded 453.6 x 3 too much. I would keep it as 1360.8 grams. You can round later.
Next you calculate volume.
Volume = mass/density = 1360.8/2.70 = ?
Then V = pi*r^2*length
V from above.
pi = 3.14
r from above and square it.
Length. Solve for this.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### 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.

2. ### physics

A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. Initially, there is no tension in the wire when it is horizontal. A 88-N picture is then hung from the center of the wire, as the

3. ### Physics

1. A force of 40N at the end of a wire of length 4m and diameter 2mm process and extension of 0.24mm. Calculate; (a) stress on the wire (b) strain in the wire (c) Young's Modulous for the material of the wire (π=3.14)

4. ### Check my answers Ms. Sue

A student made an electromagnet using a battery, electrical tape, and metal wire. Which of the following actions will NOT increase the magnetic field that is being produced? (1 point) • changing the type of wire that has low

1. ### Physics - Verification

Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions. What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the

2. ### physics

A force of 40N is applied at the end of a wire 4m long and produces an extension of 0.24mm. If the diameter of the wire is 2.00mm calculate the stress on the wire and strain in the wire. With full workings please

3. ### Physics

A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. Initially, there is no tension in the wire when it is horizontal. A 98-N picture is then hung from the center of the wire, as the

4. ### Physics

A wire of 5.0m and diameter 2.0mm,extends by 0.25mm when a force of 50N was stretch it from it's end calculate a.the stress on the wire. b.the strain in the wire. c.the young's modulus of elasticity of the wire

1. ### Physics

A wire of length 5.0 m and diameter 2.0 mm extends by 0.25 mm when a force of 50 N was used to stretch it from its end. Calculate the (a)stress on the wire (b)strain in the wire

2. ### phsyicz

The drift velocity of electrons through a point in a wire of radius 2.5 x 10-3 m is 1'5 x 10-s m/s' calculate the number of electrons passing the point for an electric current of 10'4 through the wire. (Hint: Assume the wire has a

3. ### Calculus

A 100 inch piece of wire is cut into two pieces. Each piece of wire is used to make a square wire frame. Let x be the length of one piece of the wire. Determine an algebraic representation A(x) for the total area of the two

4. ### math

If 60 feet of uniform wire weighs 80 pounds, what is the weight of 2 yards of the same wire?