Heat questions | form five Physics

Find Heat examination questions, form five Physics in acaproso.com

#	Question
1	For each of the following cases elaborate: (i) two solutions for thermal pollution. (ii) three disadvantages of tidal energy. Short answers
2	What are the three constituents of outer zone of the earth? Short answers
3	In a certain thermocouple thermometer the e.m.f. Is given by $E=a heta+frac{1}{2}b heta^2$ where $heta$ is the temperature of hot junction. If $a=10mV^{o}C^{-2}$ , $b=-frac{1}{20}mV^{o}C^{-1}$ and the cold junction is at $0^{o}C$ , calculate the neutral temperature. Mathematical Calculation
4	What is meant by thermal radiation? Short answers
5	Briefly explain why forced convection is necessary for excess temperature less than 20K? Short answers
6	Why is the energy of thermal radiation less than that of visible light? Short answers
7	A body with a surface area of 5.0 cm and a temperature of 727°C radiates 300 joules of energy in one minute. Calculate its emissivity. Mathematical Calculation
8	State Newton’s law of cooling. Short answers
9	A body cools from 70°C to 40°C in 5 minutes. If the temperature of the surroundings is 10°C , Calculate the time it takes to cool from 50°C to 20°C. Mathematical Calculation
10	What is meant by a thermometric property? Short answers

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