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
MAXImum [283]
3 years ago
10

A 34.0 %-efficient electric power plant produces 800 MW of electric power and discharges waste heat into 20∘C ocean water. Suppo

se the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical American house requires an average 20kW for heating.
How many homes could be heated with the waste heat of this onepower plant?
Physics
1 answer:
mojhsa [17]3 years ago
8 0

Answer:

77647

Explanation:

\eta = Efficiency = 34%

Power used in 1 home = 0.02 MW

Total power is

P=\dfrac{800}{\eta}\\\Rightarrow P=\dfrac{800}{0.34}\\\Rightarrow P=2352.94117\ MW

Waste of power

2352.94117-800=1552.94117\ W

Number of homes would be given by

n=\dfrac{1552.94117}{0.02}=77647.0585\ homes

The number of homes that could be heated with the waste heat of this one power plant is 77647

You might be interested in
A constant net torque is applied to a rotating object. Which of the following best describes the object's motion? A constant net
ahrayia [7]

Answer:

The object will rotate with constant angular acceleration

Explanation:

According to the Newton's Second Law for Whenever there is more than one torque acting on a rigid body that posses fixed axis, the moment of inertia as well as the angular acceleration is equals or proportional to the summation of the torques. It gives details on the relationship between rotational kinematics and torque as well as moment of inertia. This can be represented by the below equation.

∑iτi=Iα.

.Therefore when constant net torque is applied to object that is rotating, the object will rotate with constant angular acceleration

7 0
3 years ago
The force between two moving objects that are touching
Jet001 [13]
This is unclear. What are the objects? Is it a balloon? A rubber ball?
6 0
4 years ago
Read 2 more answers
Sodium has an atomic mass of 23 and an atomic number of 11, so the
horrorfan [7]

Answer:

12 Neutrons

Explanation:

So the mass of sodium is 22.990. You round it up to get 23(as stated in the problem). So, <em>what exactly is atomic mass?</em>

Atomic Mass is the total amount of neutrons and protons added up to form a total mass. So when you subtract 23-11 you get 12 Neutrons.

<u>Tip: </u>Don't know if you need this but-

The neutrons and protons are typically close in number (unless it's an isotope). So say that you subtract and the numbers of protons and neutrons aren't close at all. Well if that's the case, it's probably wrong.

hope this helps!!

5 0
3 years ago
What affects how an object falls toward earth?
ioda
1. Air resistance (therefore, the air density, shape (aerodynamic or not), and surface area affected
2. The gravitational acceleration constant (g = 9.8 m/s^2 on Earth)

4 0
3 years ago
Read 2 more answers
Electrons can move between substances ſchree ways. Which of the following can be
Lady bird [3.3K]

Answer:

B.) “Shininess” should be explained as “Light bounces off the moving electrons.”

Explanation:

6 0
3 years ago
Other questions:
  • The layers of gas that surround the Earth
    12·2 answers
  • An object is falling from a height of 7.5 meters. At what height will it’s velocity be 7 meters/second?
    14·1 answer
  • Magnetic fields are caused by?
    14·1 answer
  • What would happen if there were no friction between the girl and the slope?
    8·1 answer
  • When using two-wire cable to feed a 240-V appliance that does not require a neutral wire, you should A. mark both ends of the wh
    6·1 answer
  • List the three ways in which water reaches the atmosphere and tell which way accounts for the most of the water in the atmospher
    10·1 answer
  • What is the process that changes smaller atoms into larger ones in a star
    11·1 answer
  • What is a gravitational wave and why was it so hard to detect?
    5·1 answer
  • Which one is itttttttttttt
    11·1 answer
  • Who represents the worst of the iron age in his attempt to feed jupiter once living flesh?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!