A is the correct answer: 100 degrees C is the boiling point of water, just subtract 82 from 100.
Answer:
ΔH = 33.17m
Explanation:
By knowing the amount of time it takes the rocket to travel the horizontal 27m, we will be able to calculate the height when x=27m. So:
where 
Solving for t:
t=0.72s
Now we calculate the height of the rocket:

If the wall was 11m-high, the difference is:
ΔH = 33.17m
Part a)
Flow rate is defined as rate of volume flow
it is determined by

now if the radius of pipe is reduced then we assume here that liquid flow is ideal flow here and there is no change in the density of liquid.
So here we know that since mass is always conserved
so

so we have


now we can say from above equation that there is no effect on the flow rate is we change the radius of pipe
Part b)
now in order to find the speed of flow'




so final speed will be

here we have n = 3

so flow speed will be 9 times more than initial speed