Hi, hope this helps :)
Feel free to ask me if you do not understand. I used the elimination method.
Answer:
5/12
Step-by-step explanation:
Dividing each fraction by a divisible number results in
3/9= 1/3
6/14=3/7
4/22=2/11
Total pressure is constant and PT = P = 1/2*ρ*v^2
So p1 + 1/2*ρ*v1^2 = p2 + 1/2*ρ*v2^2 and from continuity we have ρ*A1*v1 = ρ*A2*v2
So v2 = v1*A1/A2 since r2 = 2r1 then A2 = 4A1
so v2 = v1/4
Now from above p2 = p1 + 1/2*ρ*v1^2 - 1/2*ρ*v2^2 = p1 + 1/2*ρ*v1^2 - 1/2*ρ*v1^2/4^2
So p2 = 3.0x10^4Pa + 1/2*1000kg/m^3*(12m/s)^2 - 1/2*1000kg/m^3*12^2/16
= 9.75x10^4Pa = 9.8x10^4Pa
Step-by-step explanation:
i think its 24
sorry, if its wrong
False... a ratio equivalent to 2:5 is 4:10
2/5 × 2/2 = 4/10
