The temperature distribution across a wall 1m thick at a certain time T(x)=a+b(x)+2(x)^2.where T is in 0degree, x in meters. A=900c, b= -300c/m, c= -50c/m^2. A uniform heat generation Q=1000w/m^2, and area is 10m^2, p=1600kg/m^2, k=40w/m^2, cp=4kj/kg (1) determine the rate of heat transfer entering the wall (x=0), leaving the wall (x=0)
(2) determine the rate of energy stored in the wall
(3) time rate of the temperature change at (x=0,0.25 and 0.5m)

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

answeralert drivers who drift off the road;

can somebody give me the answer so i can graduate