+0  
 
0
102
1
avatar

A 50 cm3
block of metal is made into wire of diameter 1 mm. How long will the wire be?

 May 22, 2020
 #1
avatar+111456 
+1

1 mm  =  .1 cm

 

So  the radius  of  the wire  =  .1 cm / 2  =  .05cm

 

The  cross-section  of the  wire  =  pi *(.05)cm^2   =  [.0025 pi]cm^2

 

The  volume of the wire  =  Cross-Section * Length  =  The volume of the block of metal

 

So  we  have this

 

50cm^3   =  [ .0025]cm^2  *  length

 

50 / .0025   = length   =   20,000cm

 

 

cool cool cool

 May 22, 2020

43 Online Users

avatar
avatar