A force is a push or pull to an object
3.5 seconds is 3500 milliseconds.
The correct answer to the question above is hypertonic. When celery is being placed in a glass of pure water, the solution inside its cells is going to appear as hypertonic compared to the water. This means that the cells inside has a higher concentration than outside.
Answer:
0.98kW
Explanation:
The conservation of energy is given by the following equation,
![\Delta U = Q-W](https://tex.z-dn.net/?f=%5CDelta%20U%20%3D%20Q-W)
![\dot{m}(h_1+\frac{1}{2}V_1^2+gz_1)-\dot{W} = \dot{m}(h_2+\frac{1}{2}V_2^2+gz_)](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%28h_1%2B%5Cfrac%7B1%7D%7B2%7DV_1%5E2%2Bgz_1%29-%5Cdot%7BW%7D%20%3D%20%5Cdot%7Bm%7D%28h_2%2B%5Cfrac%7B1%7D%7B2%7DV_2%5E2%2Bgz_%29)
Where
Mass flow
Specific Enthalpy (IN)
Specific Enthalpy (OUT)
Gravity
Heigth state (In, OUT)
Velocity (In, Out)
Our values are given by,
![T_i = 10\°C](https://tex.z-dn.net/?f=T_i%20%3D%2010%5C%C2%B0C)
![P_1 = 100kPa](https://tex.z-dn.net/?f=P_1%20%3D%20100kPa)
![\dot{m} = 5kg/s](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%20%3D%205kg%2Fs)
![z_2 = 20m](https://tex.z-dn.net/?f=z_2%20%3D%2020m)
For this problem we know that as pressure, temperature as velocity remains constant, then
![h_1 = h_2](https://tex.z-dn.net/?f=h_1%20%3D%20h_2)
![V_1 = V_2](https://tex.z-dn.net/?f=V_1%20%3D%20V_2)
Then we have that our equation now is,
![\dot{m}(gz_1) = \dot{m}(gz_2)+\dot{W}](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%28gz_1%29%20%3D%20%5Cdot%7Bm%7D%28gz_2%29%2B%5Cdot%7BW%7D)
![\dot{W} = \frac{(5)(9.81)(0-20)}{1000}](https://tex.z-dn.net/?f=%5Cdot%7BW%7D%20%3D%20%5Cfrac%7B%285%29%289.81%29%280-20%29%7D%7B1000%7D)
![\dot{W} = -0.98kW](https://tex.z-dn.net/?f=%5Cdot%7BW%7D%20%3D%20-0.98kW)
a boulder can change due to erosion and weathering. it can change shape and sometimes color, possibly.