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Whether you're preparing for the May/June or GCE sessions, our curated materials provide both objective and theory questions to enhance your study sessions.","tags","waec nigeria west africa examination council","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",18,"createdOn",1755991949910,"updatedOn","questionsCount",27220,"courseCount",23,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":427},"9bOUhoGD98pmDK5RbPRsJ1JFCNNUSh","q","How much heat is given out when a piece of iron of mass 50g and specific heat capacity 460 Jkg^-1k^-1 cools from 85^oC to 25^oC?","ans",[414],3,"1990","course","physics","exp","Q = mcΔθ = 0.050 x 460 x (85 - 25) = 1.38x10³J","opts",[422,423,424,425,426],"1.38 x 10⁶ J","2.53x10⁴J","7.66x10³J","1.38x10³J","1.27 X10³J",19,"19","initComment","initReply","actionData","errors"]

WAEC - Physics (1990 - No. 19)

Explanation

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