Answer: B
Explanation:
One good way to improve your gas mileage is to accelerate smoothly and directly to a safe speed.
Hope this helps!
Answer:
The answer to the range of a cooling tower is the difference between the temperature of the water going in and the temperature of the water going out of the tower.
Explanation:
Cooling towers are used to cool a stream of water using the air of the environment where it's placed or installed. In theory, the lowest temperature the water can be cooled to would be the wet bulb temperature (temperature of the air going in the cooling tower). The range would be the difference (R=Ti-To) between the temperature of the hot water going in and the cooler water going out.
Answer:
Forces like wind and water break down rocks through the processes of weathering and erosion. ... Forces like wind and water move the rock pieces. They mix with matter like sand to become sediment. Weathering and erosion help shape Earth's surface.
Answer:
Option 2.
Explanation:
A turbine produces mechanical work at the expense of fluid energy, that is to say according to the First Law of the Thermodynamics:
![w_{out} = h_{in}-h_{out}](https://tex.z-dn.net/?f=w_%7Bout%7D%20%3D%20h_%7Bin%7D-h_%7Bout%7D)
The conditions at inlet and outlet are, respectively:
Inlet - Option 1 (Superheated Steam)
![h=3248.4\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h%3D3248.4%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
Inlet - Option 2 (Superheated Steam)
![h=3690.7\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h%3D3690.7%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
Outlet (Superheated Steam)
![h = 2875.5\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h%20%3D%202875.5%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
The mechanical work per unit mass of each option is determined hereafter:
![w_{out, 1} = 3248.4\,\frac{kJ}{kg} - 2875.5\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=w_%7Bout%2C%201%7D%20%3D%203248.4%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D%20-%202875.5%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
![w_{out, 1} = 372.9\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=w_%7Bout%2C%201%7D%20%3D%20372.9%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
![w_{out, 2} = 3690.7\,\frac{kJ}{kg} - 2875.5\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=w_%7Bout%2C%202%7D%20%3D%203690.7%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D%20-%202875.5%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
![w_{out, 2} = 815.2\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=w_%7Bout%2C%202%7D%20%3D%20815.2%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
The second option offers more mechanical work per unit mass.