Sara has a fire in the fireplace to warm her 20°C apartment. She realizes that she has left the iron poker in the fire. How hot is the fire if the 0.60 m poker lengthens 0.30 cm? (αiron = 12 x 10-6°C-1)
1 Answer
May 13, 2015
You can use the expression for linear expansion as:
Where
So you get:
So: