Answer:
A flood happens when water overflows or soaks land that is normally dry. flooding, happens when a large storm or tsunami causes the sea to They soon fell ill and died from cholera, which is spread by Rice, wheat, and corn crops were destroyed. Excess water overflows and runs on top of the land.
Explanation:
hope this helps
Answer:
You have to know the basic mechanics to help you correctly use the motorcycle, and you also have to have the right mindset - knowing you can ride it, and having determination. All of these factors are the primary mental skills you need for riding a motorcycle.
Answer:
(e) 1.64 kW
Explanation:
The Coefficient of Performance of the Reverse Carnot's Cycle is:
![COP = \frac{T_{L}}{T_{H}-T_{L}}](https://tex.z-dn.net/?f=COP%20%3D%20%5Cfrac%7BT_%7BL%7D%7D%7BT_%7BH%7D-T_%7BL%7D%7D)
![COP = \frac{293.15\,K}{308.15\,K-293.15\,K}](https://tex.z-dn.net/?f=COP%20%3D%20%5Cfrac%7B293.15%5C%2CK%7D%7B308.15%5C%2CK-293.15%5C%2CK%7D)
![COP = 19.543](https://tex.z-dn.net/?f=COP%20%3D%2019.543)
Lastly, the power required to operate the air conditioning system is:
![\dot W = \frac{\dot Q_{L}}{COP}](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%20%5Cfrac%7B%5Cdot%20Q_%7BL%7D%7D%7BCOP%7D)
![\dot W = \frac{32\,kW}{19.543}](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%20%5Cfrac%7B32%5C%2CkW%7D%7B19.543%7D)
![\dot W = 1.637\,kW](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%201.637%5C%2CkW)
Hence, the answer is E.
Answer:
y ≈ 2.5
Explanation:
Given data:
bottom width is 3 m
side slope is 1:2
discharge is 10 m^3/s
slope is 0.004
manning roughness coefficient is 0.015
manning equation is written as
![v =1/n R^{2/3} s^{1/2}](https://tex.z-dn.net/?f=v%20%3D1%2Fn%20R%5E%7B2%2F3%7D%20s%5E%7B1%2F2%7D)
where R is hydraulic radius
S = bed slope
![Q = Av =A 1/n R^{2/3} s^{1/2}](https://tex.z-dn.net/?f=Q%20%3D%20Av%20%3DA%201%2Fn%20R%5E%7B2%2F3%7D%20s%5E%7B1%2F2%7D)
![A = 1/2 \times (B+B+4y) \times y =(B+2y) y](https://tex.z-dn.net/?f=A%20%3D%201%2F2%20%5Ctimes%20%28B%2BB%2B4y%29%20%5Ctimes%20y%20%3D%28B%2B2y%29%20y)
![R =\frac{A}{P}](https://tex.z-dn.net/?f=R%20%3D%5Cfrac%7BA%7D%7BP%7D)
P is perimeter ![= (B+2\sqrt{5} y)](https://tex.z-dn.net/?f=%3D%20%20%28B%2B2%5Csqrt%7B5%7D%20y%29)
![R =\frac{(3+2y) y}{(3+2\sqrt{5} y)}](https://tex.z-dn.net/?f=R%20%3D%5Cfrac%7B%283%2B2y%29%20y%7D%7B%283%2B2%5Csqrt%7B5%7D%20y%29%7D)
![Q = (2+2y) y) \times 1/0.015 [\frac{(3+2y) y}{(3+2\sqrt{5} y)}]^{2/3} 0.004^{1/2}](https://tex.z-dn.net/?f=Q%20%3D%20%282%2B2y%29%20y%29%20%5Ctimes%201%2F0.015%20%5B%5Cfrac%7B%283%2B2y%29%20y%7D%7B%283%2B2%5Csqrt%7B5%7D%20y%29%7D%5D%5E%7B2%2F3%7D%200.004%5E%7B1%2F2%7D)
solving for y![100 =(2+2y) y) \times (1/0.015) [\frac{(3+2y) y}{(3+2\sqrt{5} y)}]^{2/3} \times 0.004^{1/2}](https://tex.z-dn.net/?f=100%20%3D%282%2B2y%29%20y%29%20%5Ctimes%20%281%2F0.015%29%20%5B%5Cfrac%7B%283%2B2y%29%20y%7D%7B%283%2B2%5Csqrt%7B5%7D%20y%29%7D%5D%5E%7B2%2F3%7D%20%5Ctimes%200.004%5E%7B1%2F2%7D)
solving for y value by using iteration method ,we get
y ≈ 2.5