13-Choose the correct In a certain material there is a current of 16 A flowing through a surface to
the right, and there is an equal amount of positive and negative charge
passing through the surface producing the current. How
much negative charge passes through the surface?
a. 8 C/s toward the right
b. 8 C/s toward the left
c. 16 C/s toward the right
d. 16 C/s toward the left

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

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation