Print Calculator Periodic Table Question 6 of 17 ncorrect Map A pling The coeffi

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Print Calculator Periodic Table Question 6 of 17 ncorrect Map A pling The coefficient of linear expansion for some common materials are listed in Material a 1/0C) the table to the right. You would like to design an emergency overheating Polycarbonate 70.2x105 alarm using one of these materials. In your design, at room temperature (23.0°C) a 8.51 cm long cylinder of the material will sit with one end against Aluminum 22.2x10 a wall and the other just barely touching a button. Once the heat causes the cylinder to lengthen by 0.0248 cm, the button will be activated, turning on Brass 18.7x10-6 the alarm. 16.6x10-5 Copper At what temperature will the alarm be triggered if the cylinder is made out of Copper? Stee 13.0x10 Cast Iron 10.4x106 Number Titanium 8.60x106 4038 5.92x106 Glass At what temperature will the alarm be triggered if the cylinder is made out of cast iron? Number 6445 A Previous ® Give Up & View solution Check Answer Next Ext O Hint

Explanation / Answer

dl = 0.0248 cm
l = 8.51 cm
To = 23

a) 0.0248 = 8.51*16.6*10^-6*(T - 23)
   T = 198.555 deg
b) T = 303.213 C

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