The thermometer bulb should have ___________ a) High heat capacity b) No heat capacity c) Small heat capacity d) Varying heat capacity
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The thermometer bulb should have ___________
a) High heat capacity
b) No heat capacity
c) Small heat capacity
d) Varying heat capacity
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- Which of the following is not a method of transfer of heat? O Conduction Radiation Convection Convention No correct answerTrue or False Radiative heat transfer requires a fluid to mediate the energy transfer.True or False The direction of heat flow between two objects depends on the amount of internal en True False4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?
- Heat can be transferred through a vacuum by which one or more of the following? conduction convection radiation condensationWhy is it important to know the specific heat of materials? please explainIt is possible that the temperature of the body changes even without giving heat to it or taking heat from it. a) True b) False
- DATA: LATENT HEAT OF FUSION MASS of EMPTY CALORIMTER (g) 48.1g MASS of CALORIMETER with WATER (g) 181.5g MASS of CALORIMETER with WATER AND ICE (g) 211.9g INTIAL TEMPERATURE of Water (To): 820C INTIAL TEMPERATURE of ICE(To): OoC FINAL TEMPERATURE(TF): 51oCWhenever you directly touch a hot plateQuestion 14 Which one of the following processes of heat transfer requires the presence of a fluid? O convection A O vaporization O induction O conduction O radiation