Two water bottles A and B have the same mass (m) and very similar size and shape
ID: 1652392 • Letter: T
Question
Two water bottles A and B have the same mass (m) and very similar size and shape but are made from different materials (M_A and M_B respectively) at room temperature. The same amount of boiling water is put into A and B, and then both bottles are closed with screw caps. After 5 minutes, the temperature of water in bottle A is higher than the water in bottle B. We may then conclude that (with your explanation): (a) M_A has higher specific heat and the water in A has lower internal energy. (b) M_A has lower specific heat and the water in B has higher internal energy. (c) M_B has lower specific heat but the water in A and B have the same internal energy. (d) M_B has higher specific heat but the water in A has higher internal energy. (e) M_B and M_B have the same specific heat and the water in A and B have the same internal energy.Explanation / Answer
SSpecific heat is the amount of energy required to increase the temperature of a material by one degree.
Lower the specific heat of the substance, lesser time it takes to increase temperature. So the material of B absorbes some amount of heat from the water in lesser time than A. So it can be concluded that,
MB has lower specific heat, but the water in A and B both have same internal energy.
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