Answer:
Explanation:
We can assume that the general formula for the drag force is given by:
And we can see that is proportional to the area. On this case we can calculate the area with the product of the width and the height. And we can express the grad force like this:
Where w is the width and h the height.
The last formula is without consider the area of the carrier, but if we use the area for the carrier we got:
If we want to find the additional power added with the carrier we just need to take the difference between the multiplication of drag force by the velocity (assuming equal velocities for both cases) of the two cases, and we got:
We can assume the same drag coeeficient 
and we got:
1.7 ft =0.518 m
60 mph = 26.822 m/s
In order to find the drag coeffcient we ned to estimate the Reynolds number first like this:
And the value for the kinematic vicosity was obtained from the table of physical properties of the air under standard conditions.
Now we can find the aspect ratio like this:
And we can estimate the calue of 
from a figure.
And we can calculate the power difference like this:
Answer:
ηa=0.349
ηb=0.345
Explanation:
The enthalpy and entropy at state 3 are determined from the given pressure and temperature with data from table:
The quality at state 4 is determined from the condition 
and the entropies of the components at the condenser pressure taken from table:
The enthalpy at state 4 then is:
Part A
In the case when the water is in a saturated liquid state at the entrance of the pump the enthalpy and specific volume are determined from A-5 for the given pressure:
The enthalpy at state 2 is determined from an energy balance on the pump:
=346.67 kJ/kg
The thermal efficiency is then determined from the heat input and output in the cycle:
Part B
In the case when the water is at a lower temperature than the saturation temperature at the condenser pressure we look into table and see the water is in a compressed liquid state. Then we take the enthalpy and specific volume for that temperature with data from and the saturated liquid values:
The enthalpy at state 2 is then determined from an energy balance on the pump:
=299.79 kJ/kg
The thermal efficiency in this case then is:
Answer:
ser gay
Explanation:
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Systems such as dams and power plants use turbines and generators to generate electricity along with any other components, which then transfer the energy to our power grid which uses an enormous system of wires used to step down energy so that it can safely be delivered to a home or other building for use.
<h3>What are power plant?</h3>
A power station , also called a power plant and sometimes a power plant , is an industrial facility for the production of electricity. Power plants are usually connected to the power grid.
In case of electrical demand, water is let in from the elevated tank into the lower tank. It produces electricity as it flows through a turbine, which produces motion and electricity. Thermal power plants produce electricity by converting heat into electricity, mainly through combustion.
To learn more about power plant, refer;
brainly.com/question/7670779
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