A 20.00 cm long piece of copper (B 51 x 10) at 0°C is placed in contact with a 30.00 cm aluminum (B= 72 x 10) at 400°C. They come to equilibrium at 205°C. How much have the lengths of long piece of - the two metals changed? a) 0697cm for copper, -0.1404cm for aluminum b) 2091cm for copper, -0.4212cm for aluminum c) +0.0663cm for copper, -0.1476cm for aluminum 3 d) 0.1989cm* for copper, -0.4428cm for aluminum e) None of the above

Question
A 20.00 cm long piece of copper (B 51 x 10) at 0°C is placed in contact with a 30.00 cm
aluminum (B= 72 x 10) at 400°C. They come to equilibrium at 205°C. How much have the lengths of
long piece of
-
the two metals changed?
a) 0697cm for copper, -0.1404cm for aluminum
b) 2091cm for copper, -0.4212cm for aluminum
c) +0.0663cm for copper, -0.1476cm for aluminum
3
d) 0.1989cm* for copper, -0.4428cm for aluminum
e) None of the above

Image Transcription

A 20.00 cm long piece of copper (B 51 x 10) at 0°C is placed in contact with a 30.00 cm aluminum (B= 72 x 10) at 400°C. They come to equilibrium at 205°C. How much have the lengths of long piece of - the two metals changed? a) 0697cm for copper, -0.1404cm for aluminum b) 2091cm for copper, -0.4212cm for aluminum c) +0.0663cm for copper, -0.1476cm for aluminum 3 d) 0.1989cm* for copper, -0.4428cm for aluminum e) None of the above

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