Homework Help: physics

Posted by Jessica on Tuesday, October 9, 2007 at 9:10pm.

A silver bar 0.125 meter long is subjected to a temperature change from 200 C to 100 C. What will be the length of the bar after the temp change?
A:0.124764 meter
B:0.00023635 meter
C: 0.00002363 meter
D:0.0000189 meter

physics - bobpursley, Tuesday, October 9, 2007 at 9:26pm
deltal=L*alpha*deltaTemp
Now you know it will be small. Subtract it from .125.
So only one answer is possible of the choices. You dont need to do any calculations.
physics - Samuel, Tuesday, April 22, 2008 at 12:29pm
A:0.124764 meter
physics - odai, Tuesday, June 17, 2008 at 12:40am
d
physics - odai, Tuesday, June 17, 2008 at 12:40am
d

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