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2017 WAEC physics questions and answers expo

*Complete Physics obj*1-10 CAABADACC11-20 BAADDCBADA21-30 CCBACBCBAB31-40 ACADDBBBAC41-50 BCDABCABCASECTION A ANS 5QUESTION================================1)decrease in height (h)increase in time (t)this shows that distance changes with time==================================3)i)Brownian motionii)Atomic sizeiii)Expansion================================2)given that U=15m3^-1R=U* sqr2h/gh=20mg=10R=15*sqr2*20/10R=15*sqr40/10R=15*sqr4R=15*2=30mR=30m=============================4)L1=14cm F1=4N,F2=6NL2=4cm, Lo=?Using hooke’s law4/14-Lo*6/4-Lo4(4-Lo)=6(14-Lo)16-4Lo=64-6Lo-4Lo+6Lo=64-162Lo=48Lo=48/2Lo=24Cm=============================5a)i)forceii)length5b)by increasing the density {Read More}