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
olchik [2.2K]
3 years ago
7

Which type of central heating system is often used when heating many buildings from a central location?

Physics
2 answers:
RoseWind [281]3 years ago
6 0

Answer:

Correct answer is option D

Explanation:

Electric baseboard is not a correct option because it is very expensive.

Forced-air is and hot water are also not correct option because they are less efficient and more expensive in comparison to steam.

Steam as a central heating system is often used when heating many buildings from a central location because it is less expensive and more efficient. For generating steam, solar energy or fossil fuels are used. Steams is passed in the whole buildings through pipelines from a central location.

Deffense [45]3 years ago
5 0
Steam is often used as a central heating system when heating many buildings froma central location. So the correct option for the given question is option "D". Steam is actually generated ina single room or place mechanically or by useing fossil fuel or solar energy and then it is passed through pipelines to several rooms and buidings. This kind of system is mostly used when heating several rooms or building at once. Electric heaters are normally avoided as the cost of electricity is far higher than any other source of heating.
You might be interested in
what will be the restoring force if a spring with a spring constant of 45 newtons per meter is pulled 0.30 meters in the downwar
Anna35 [415]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the choices the can be found elsewhere:

A.) 14 newtons upward 
<span>B.) 45 newtons upward </span>
<span>C.) 67 newtons upward </span>
<span>D.) 130 newtons upward </span>
<span>E.) 150 newtons upward
</span>
The answer is A.) 14 newtons upward


7 0
3 years ago
Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kin
nexus9112 [7]

Answer:

A

Explanation:

KE = 1/2 mv^2

=1/2(30kg)( 3.4 m/s)^2

=173.4 joules

=1.7×10^2 joules

6 0
3 years ago
A van accelerates from 4m/s to 20m/s in 8s. How far does it travel in this time?​
zubka84 [21]

Answer:

96 m

Explanation:

Given,

Initial velocity ( u ) = 4 m/s

Final velocity ( v ) = 20 m/s

Time ( t ) = 8 s

Let Acceleration be " a ".

Formula : -

a = ( v - u ) / t

a = ( 20 - 4 ) / 8

= 16 / 8

a = 2 m/s²

Let displacement be " s ".

Formula : -

s = ut + at² / 2

s = ( 4 ) ( 8 ) + ( 2 ) ( 8² ) / 2

= 32 + ( 2 ) ( 64 ) / 2

= 32 + ( 2 ) ( 32 )

= 32 + 64

s = 96 m

Therefore, it travels 96 m in time 8 s.

3 0
3 years ago
How does water get up to the atmosphere, and how does it get back down to earth surface
IrinaK [193]

Answer:

Water gets up to the Earth's atmosphere by evaporating from a body of water, which is then they become water vapor. It returns back to the surface by returning back to its water state and falling back down (as rain). The water vapor turns into clouds (clouds are really just water droplets), and when it cannot hold anymore waters, it disperses all the water (by raining).

6 0
2 years ago
Jeremy ran a race at a speed of 15 m/s in a time of 8 seconds. Calculate the distance he ran.
Masja [62]

Answer:

120 m/s if m/s means miles per second than

Explanation:

15 × 8

8 0
2 years ago
Read 2 more answers
Other questions:
  • All of the waves in the electromagnetic spectrum are _______ waves.
    7·1 answer
  • What is the purpose of the overrunning clutch in the starter drive?
    12·1 answer
  • Why are strokes and Alzheimer's disease serious conditions? Select all that apply. You can die from either one.
    6·2 answers
  • A football is kicked into the air from an initial height of 4 feet. The height, in feet, of the football above the ground is giv
    8·2 answers
  • A 1.50-V battery is used to charge a capacitor. When the capacitor is fully charged, it stores 64.0 mJ. If the capacitor were fu
    7·2 answers
  • An electric motor does 900j of work for 8 hours. Calculate the power used​
    10·1 answer
  • A baseball is thrown vertically upward with an initial velocity of 30.0 m/s. The maximum height gained by the ball is?
    11·1 answer
  • When you look at your speedometer and it reads 60 mph this is your instantaneous speed
    11·1 answer
  • Describa con sus palabras que fue lo que descubrio galileo en su legendario experimento en la torre inclinada de pisa
    7·1 answer
  • A dish is given to you, which contains a blackish-yellow powder. When you move a magnet over it, you are amazed to see black par
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!