PHYSICS WAEC ANSWERS
(2a)
Metal flat plate: It is a collector of heat that converts the radiant solar energy from the sun into heat energy by the process of greenhouse effect.
(2b)
Thermal Insulator: It prevents loss of accumulated heat in the solar collector and thereby improves its absorption efficiency.
(2c)
Tubes: They are use to capture almost all the sun's energy. It is the most effecient solar collector
(1)
Original length Lo = 3m
Extension e = 310 = 3*3 = 9m
F×e
F = ke where k = 982.3NM-²
F = 982.3*9 = 8840.7N
The five that produce the extension F = 8.840.7N
Metal flat plate: It is a collector of heat that converts the radiant solar energy from the sun into heat energy by the process of greenhouse effect.
(2b)
Thermal Insulator: It prevents loss of accumulated heat in the solar collector and thereby improves its absorption efficiency.
(2c)
Tubes: They are use to capture almost all the sun's energy. It is the most effecient solar collector
(1)
Original length Lo = 3m
Extension e = 310 = 3*3 = 9m
F×e
F = ke where k = 982.3NM-²
F = 982.3*9 = 8840.7N
The five that produce the extension F = 8.840.7N
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