Friday

October 24, 2014

October 24, 2014

Posted by **love** on Thursday, January 19, 2012 at 10:59pm.

- Chemisty -
**DrBob222**, Thursday, January 19, 2012 at 11:13pmI 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

- Chemisty -
**love**, Thursday, January 19, 2012 at 11:19pmso 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

- Chemisty -
**DrBob222**, Thursday, January 19, 2012 at 11:31pm0.0808 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.

**Answer this Question**

**Related Questions**

Chemistry - Aluminum wire is sold on 10 pound spools (100.00 lbs). The diameter ...

Physics - A large spool in an electrician's workshop has 52 m of insulation-...

physics - In a modern art exhibit, a multicolors empty industrial wire spool is ...

physics - Consider two copper wires with the same cross-sectional area. Wire A ...

physics - The magnetic ﬁeld in a loudspeaker is 0.2 T. The wire consists ...

physics - Suppose that you wish to fabricate a uniform wire out of 0.900 g of ...

college physics - A 4m long copper wire has a diameter of 2mm and carries a ...

physics - Two spherical conducting wires A and B are connected to the same ...

physics - Two spherical conducting wires A and B are connected to the same ...

Electricity help needed please - Two spherical conducting wires A and B are ...