Answer:
one
Step-by-step explanation:
I think, there were 4 lines and the two lines are reaching each other
Answer:
3
Step-by-step explanation:
12
Answer: what the other guy said 69
Step-by-step explanation:
The velocity v and maximum height h of the water being pumped into the air are related by the equation
v= ![\sqrt{2gh}](https://tex.z-dn.net/?f=%20%5Csqrt%7B2gh%7D%20%20)
where g = 32
(a) To find the equation that will give the maximum height of the water , solve the equation for h
v= ![\sqrt{2gh}](https://tex.z-dn.net/?f=%20%5Csqrt%7B2gh%7D%20%20)
Take square root on both sides
= 2gh
Divide by 2g on both sides
= h
So maximum height of the water h = ![\frac{v^2}{2g}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bv%5E2%7D%7B2g%7D%20%20)
(b) Maximum height h= 80
velocity v= 75 ft/sec
Given g = 32
h = ![\frac{v^2}{2g}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bv%5E2%7D%7B2g%7D%20%20)
h = ![\frac{75^2}{2*32}](https://tex.z-dn.net/?f=%20%5Cfrac%7B75%5E2%7D%7B2%2A32%7D%20%20)
h= 87.89 ft
The pump withe the velocity of 75 ft/sec reaches the maximum height of 87.89 feet. 87.86 is greater than the maximum height 80 feet.
So the pump will meet the fire department needs.