Please answer the question clearly. 1. Bodies A and B are in contact and have te
ID: 1658215 • Letter: P
Question
Please answer the question clearly. 1. Bodies A and B are in contact and have temperatures TA and TB, respectively, where TA > TB. Which of the following statements is incorrect? A. Heat will naturally flow from A to B. B. A and B are not in thermal equilibrium. C. A and B necessarily contain different amounts of heat. D. Work can be done to make heat flow from B to A. 2. You want to use an irregularly shaped piece of aluminum as a thermometer by measuring volume changes. The aluminium has a volume Vo at temperature To. You can determine its new volume, V at some other temperature, T, by dunking it in a beaker of water and quickly measuring the water displaced. Find the correct expression for T as a function of V. (alluminum has a coefficient of volume expansion Bat) + To D. -10Explanation / Answer
1. given two bodies A and B , Temperatures Ta, Tb
such that Ta > Tb
A. Heat will flow from A to B (True) as Ta > Tb , A is hotter than B and the heat will naturally flow from A to B
B. Ta ! = Tb hence A and B are not in thermal equillibrium ( hence true)
C. Heat content not only dependsw on the temperature of object, but also material prperty and the mass ( amount) of materisal. So A and B can have same heat content for different temperatures as well hence false statement
D. Work can be done to make heat flow from B to A, which is the working principle of a refrigrator. Hence true
2. given volume at temperature To = Vo
then at temperature T, volume V is given by
V = Vo(1 + beta(al)*(T - To))
V/Vo = 1 + beta(al)*T - beta*al)*To
T = (V/Vo - 1 + beta(al)*To)/beta(al)
T = (V - Vo)?beta(al)*Vo + To
so option Cis the correct answer