A square hole 4.8 cm along each side is cut in a sheet of copper. Calculate the change in the area of this hole if the temperature of the sheet is increased by 73 K. The coefficient of linear expansion of copper is 1.7 x 10-5 (°C)-¹. Answer in units of cm².
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- The density of lead is 1.13 x 104 kg/m3 at 20.0°C. Find its density (in kg/m³) at 118°C. (Use a = 29 × 10-6 (°C)-1 for the coefficient of linear expansion. Give your answer to at least four significant figures.) HINT 1.12 kg/m3 Need Help? Read It Watch It S. 93% 4 A O E a 4 7:45 PM 12/4/2021 55°FA copper rod is 8 m long at 20 ◦C and has a coefficient of linear expansion ? = 17 × 10−6 (?) −1 . What is the increase in the rod’s length when it is heated to 40 ◦C?What is the change in length in millimeters of a 3.00-cm-long column of mercury if its temperature changes from 29.0°C to 43.0°C, assuming the mercury is unconstrained lengthwise? mm
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