Answer:
a) 1511 MW
b) 44%
Explanation:
The thermal power will be the electric power plus the heat taken away by the cooling water.
Qt = P + Qc
The heat taken away by the water will be:
Qc = G * Cp * (t1 - t0)
The Cp of water is 4180 J/(kg K)
The density of water is 1 kg/L
Then
G = 1.17 * 10^8 L/h * 1 kg/L * 1/3600 h/s = 32500 kg/s
Now we calculate Qc
Qc = 32500 * 4180 * (29.8 - 23.6) = 842*10^6 W = 842 MW
The total thermal power then is
Qt = 669 + 842 = 1511 MW
The efficiency is
η = P / Qt
η = 669 / 1511 = 44%
Answer:
The ion is now -1
Explanation:
the number of electrons is greater than the number of protons, therefore it has a negative charge
Answer:
Temperature, density
Explanation:
Physical properties of a substance are those properties that do not change the chemical composition of the substance. There are two types of physical properties namely: intensive property and extensive property.
Intensive properties are those physical properties that does not depend on the sample size of the substance involved. Examples of intensive physical properties are temperature, density, boiling point. For example, the size or amount of a substance does not determine the the TEMPERATURE or BOILING POINT of the substance.
Work= force*distance
Work= x*12
Force= mass*acceleration
Force= 5 kg*6
Force= 40 N
Work= 40×12
Work= 480 J (joules)
I think this is it
<em>The question doesn't ask about anything in particular. I'll compute the net force as a guide, so you can solve your own problem.</em>
Answer:
The net force is zero
Explanation:
<u>Net Force
</u>
If we want to compute the net force exerted on a body, we must add them as vectors, i.e. the horizontal and vertical components independently.
The box has 4 forces, as follow
40 N right
40 N left
10 N up
10 N down
The vertical forces are equal and opposite, i.e. their sum is zero. The same situation happens in the horizontal direction, both forces are of equal magnitude and opposite, their sum is zero. The net force is then, zero in both axes