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Mademuasel [1]
3 years ago
6

: where are you likely to find a cooling plant located in the duckwork? A. single family home B. A large apartment C. large fact

ory D. A medium sized offices
Physics
1 answer:
Artemon [7]3 years ago
5 0

Answer:

Option C

Explanation:

In a large sized factory, it is essential to create cooling system based on duct work because it can then be able to regulate cooling of any section of the factory from one place. Also, ductwork cooling is preferred in large spaces such as big offices building, towers, factories etc.

Hence, option C is correct

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What is the potential energy of a 20-kg safe sitting on a shelf 0.5 meters
ki77a [65]

Explanation:

P.E=MGH

Where m is mass

Where G is Acceleration Due to Gravity

Where h is Height

So the parameters are M = 20kg

G = 9.8m/s

H = 0.5meters

P.E= 20x9.8x0.5

=98J.

So Ans. is A= 98J

8 0
3 years ago
PLEASE NEED THIS QUICKLY
Pepsi [2]
P.E = mgh where

m = mass in kilograms

g = acceleration due to gravity ≈ 9.8m/s^2

h = height in meters

P.E = 10 x 9.8 x 5

P.E = 490 J
3 0
3 years ago
What is the smallest particle of the element iron (fe) that can be as iron ?
grin007 [14]
This answer is the same for all elements, a single atom of any element is still that element.
6 0
3 years ago
The sticky substances in cigarettes that coat the lining of the<br> lungs are _____.
Svetach [21]

Answer:

Tar

Explanation: Tar is a big ingredient in cigarettes and can cause the sticky substance

5 0
3 years ago
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Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric pow
aivan3 [116]

a. A dam is usually built at the site of hydroelectric power. As water accumulates, its potential power for producing electric power increases. As this water moves downstream from the dam, mostly through a fall, its kinetic energy is harnessed by turbines and converted to electric energy.


b. One factor is the height of the fall of the water from the dam. The higher the height the higher the kinetic energy of the water and hence can be converted to higher electric energy. The higher the number of coils of the turbine generator being rotated by the water, the higher the conversion to electric current.


c. One is impoundment. This type is the most common and involves the building of a dam to store water and later the water is released to turn turbines. The second type is diversion. This type does not require a dam. Some water is diverted from the main river to create a pen-stock that runs a turbine.


d. The advantage of hydroelectric power is that is is a clean energy source hence does not cause global warming. Global warming can have economic consequences. The operating cost of this type of plant is low hence the costs of electricity are able to be kept low for the consumers. 2 disadvantage is that creating a dam upstream causes a change in the physical and chemical characteristics of the river or water bodies affecting ecosystems. Another is that electricity is dependent on the water regime hence dependency is tied to climate.


4 0
3 years ago
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