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These resources are designed to help you familiarize yourself with the exam format, identify key topics, and practice effectively. 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":414,"_415":416,"_263":370,"_417":418,"_419":420,"_110":425},"n6j6lmlNcstouw11ERqaKEkcWpwdA5","q","A metal of mass 200g at a temperature of 100^oC is placed in 100g of water at 25^oC in a container of negligible heat capacity. If the final steady temperature is 30^oC, calculate the specific heat capacity of the metal. [specific heat capacity of the water is 4200 Jkg^-1 K^-1]","ans",[95],"2011","course","physics","exp","MC\\(\\theta\\)_metal = MC\\(\\theta _{water}\\)
\n
\n0.2 x C x 70 = 0.1 x 4200 x 5
\n
\nC = 150","opts",[421,422,423,424],"150 Jkg^-1K^-1","300 Jkg^-1K^-1","320 Jkg^-1K^-1","1960 Jkg^-1K^-1",21,"21","initComment","initReply","actionData","errors"]

WAEC - Physics (2011 - No. 21)

Explanation

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