Question

Dr. Terror has developed a new alloy called Ultranomium. He is testing a bar that is 1.35 m long and has a mass of 362 g. Using a carbon-dioxide infrared laser, he carfully heats the bar from 20.6 °C to 268 °C. Answer the two questions below, using three significant digits. Part A: If the bar absorbs 85300 J of energy during the temperature change, what is the specific heat capacity (c) of the Ultranomium? C = J/( Kg) Part B: He notices that at this new temperature, the bar's length has increased by 0.0014 m. What is the coefficient of linear expansion (a) for the new alloy? a = C-1

Answer 1

1.3514 = 1.35 {1+ (541-243-2)] 7 1.3514 = 1.35 of 1.35%2x 247.4 (13514 – 135) 1:35x4x 24714 -> -> ( 1.3514-1.35) (1.35x247.4) x = 4.19x18 6 .اس i. Conefficient of linear expansion (2) = 4.19x166 El Cass)