1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Misha Larkins [42]
3 years ago
8

A nuclear power plant operates at 79 percent of its maximum theoretical (Carnot) efficiency between temperatures of 700° and 330

°C. If the plant produces electric energy at the rate of 1.3 GW, how much exhaust heat is discharged per hour?
Physics
1 answer:
ololo11 [35]3 years ago
6 0

Answer:

Explanation:

T₁ = 700 + 273 = 973 k

T₂ = 330 + 273 = 603 k

Theoretical efficiency = T₁ - T₂ / T₁

= (973 - 603) / 973

= .38 OR 38%

Operating efficiency = .79 x 38

= 30.02 %

Heat input Q₁ , Heat output to sink Q₂ , conversion into power = Q₁ - Q₂

given Q₁ - Q₂ = 1.3 x 10⁹ W

efficiency = Q₁ - Q₂  /  Q₁

Q₁ - Q₂  /  Q₁ = 30.02 / 100

100Q₁ - 100Q₂ = 30.02Q₁

69.98 Q₁  = 100Q₂

Q₁  = 1.429 Q₂

Putting this in the relation

Q₁ - Q₂ = 1.3 x 10⁹ W

1.429Q₂ - Q₂ = 1.3 x 10⁹ W

.429Q₂ = 1.3 x 10⁹

Q₂  = 3.03 x 10⁹W

= 3.03 GW.

You might be interested in
A bicyclist starts at point P and travels around a triangular path that takes her through points Q and R before returning to the
REY [17]

Answer:

Displacement by cyclist is zero.

Explanation:

In the given question bicyclist is travelling in a rectangular track having P , Q and R edges.

The bicyclist starts from P and travel through Q and R and returned to P again.

We need to find its displacement.

We know displacement  of a body is its difference between its initial position to final position.

Here in the given question the bicyclist returns to P again.

Therefore, total displacement by bicyclist is zero.

Hence, this is the required solution.

4 0
4 years ago
What is the young modulus of polythene?
Rina8888 [55]
The Young’s modulus of polythene is 0.8
8 0
3 years ago
Hi please help me in this question
Orlov [11]
Well for question 1, the answer would be your opinion on which graph is easier to read and understand better.

for the second question. the one to get specific data would be the table chart because you can read the numbers easily rather than trying to guess on the bar chart wear the bars are actually at are kinda close to an exact number, but not really the number you were thinking
6 0
3 years ago
What happens when an electron moves from an excited state to the ground state?
Darina [25.2K]
<span>When an electron moves from an excited state to the ground state, "Energy releases"

Hope this helps!</span>
6 0
3 years ago
two cars are moving at constant speeds in a straight line along a major highway. The first is travelling at 20ms^-1 and the seco
Reika [66]

Answer:

t=750s

Explanation:

The two cars are under an uniform linear motion. So, the distance traveled by them is given by:

\Delta x=vt\\x_f-x_0=vt\\x_f=x_0+vt

x_f is the same for both cars when the second one catches up with the first. If we take as reference point the initial position of the second car, we have:

x_0_1=6km\\x_0_2=0

We have x_f_1=x_f_2. Thus, solving for t:

x_0_1+v_1t=x_0_2+v_2t\\x_0_1=t(v_2-v_1)\\t=\frac{x_0_1}{v_2-v_1}\\t=\frac{6*10^3m}{28\frac{m}{s}-20\frac{m}{s}}\\t=750s

8 0
3 years ago
Other questions:
  • What would be the best tool to measure the amount of matter in an object?
    11·1 answer
  • A dinosaur and a mammoth elephant are walking away from each other in Jurassic Park When the mammoth is at a distance that is tw
    13·1 answer
  • An astronaut in the International Space Station cannot stand on a weighing scale. But an astronaut inside a rotating space stati
    9·1 answer
  • Which of these is an example of electromagnetic induction? A current passing through a resistor uses power IR2. A current throug
    11·1 answer
  • Why do we feel cool when we spray perfume in our body​
    5·2 answers
  • What is the value of work done on an object when a 0.1x102-newton force moves it 30 meters and the angle between the force and t
    12·1 answer
  • ramp, which makes an angle of 30o degrees to the horizontal. A distance d = 1.3 m away from the block is an unstretched spring w
    8·2 answers
  • The forces of gravity between the earth and the moon causes
    10·1 answer
  • A toy boat moves horizontally in a pond. The horizontal position of the boat in meters over time is shown below.
    15·1 answer
  • Which example is a simple machine?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!