K.C.S.E Physics Q & A - MODEL 2016PP1QN14
a) Explain why it is advisable to use a pressure cooker for cooking at high altitudes
b) Water of mass 3.0kg initially at 200C is heated in an electric kettle rated 3.0KW. The water is heated until it boils at 1000C. (Take specific heat capacity of water 4200Jkg1K-1. Heat capacity of the kettle = 450JK-1, Specific latent heat of vaporization of water = 2.3Mjkg-1)
(i) The heat absorbed by the water.
ii)Heat absorbed by the electric kettle
iii) The time taken for the water to boil
iv) How much longer it will take to boil away all the water.
FORM I - PHYSICS SYLLABUS
FORM II - PHYSICS SYLLABUS
FORM III - PHYSICS SYLLABUS
FORM IV - PHYSICS SYLLABUS
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