How to start?
Copper wire density is 8.96 g/cm^3...the diameter is 0.25 m (25 cm). If sample mass is 22 g, how long is the wire?

Question

How to start?
Copper wire density is 8.96 g/cm^3...the diameter is 0.25 m (25 cm). If sample mass is 22 g, how long is the wire?

triciaal · Answer

what is the relationship between mass, volume and density?
what basic shape is the wire? and the volume of that shape?
what is the relationship with length and volume?

anonymous · Answer

Messed up my conversion..

Mass: 22 g
Volume: ( pi ) (r^2) ( h ) cm^3
Diameter: 0.025 cm ---> Radius: 0.0125 cm
Density: 8.96 g/cm^3

8.96 g ............ 22 g
1 cm ^3 ......... x cm ^3 .......... x cm ^3 = 2.46 cm^3

V: ( pi ) (0.0125)^2 ( h ) = 2.46 
    h = 5011.47 cm

jfraser · Answer

seems reasonable