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AveGali [126]
4 years ago
14

List two methods by which a community can save water. In your own words, explain how these methods would help to increase the ye

arly economic savings of the community.
Physics
1 answer:
Oliga [24]4 years ago
8 0
Conservation and Rain Water Tank. Through conservation, they can save water in their own houses by lessening the use of water in an unimportant purpose; they can turn of the faucet when it is not used; they can use their laundry water to clean the bathroom and there are more. Through Rain Water Tank, they can create this structure in order to collect rain water and store it in the tank then use it afterwards such as in watering the plants.
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A perfectly elastic collision conserves momentum and kinetic energy..

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What is defined as a material resistance to the transmission of light waves flashcards?
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This property is called "Opacity".

The question is worded in a difficult way. A more easily understood wording of this question would be:

"<em>What is the name of the property of a material that prevents light passing through?"</em>
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Explanation:

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4 years ago
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Un bloque de 750 kg es empujado hacia arriba por una pista inclinada 15º respecto de la horizontal. El coeficiente de rozamiento
kotegsom [21]

Answer:

4776.98 N is the minimum force to start the rise.  

Explanation:

We can use the first Newton's law to find the minimum force to move the block.

So we will have:

F-W_{x}-F_{f}=0

Where:

  • F is the force
  • W(x) is the weight of the block in the x direction, W = mg*sin(15)
  • F(f) is the static friction force (F(f) = μN), μ is the static friction coefficient 0.4.

F=W_{x}+F_{f}=mgsin(15)+\mu N

F=mgsin(15)+\mu mgcos(15)

F=mg(sin(15)+\mu cos(15))

F=750*9.81(sin(15)+0.4*cos(15))

F=4776.98 N

Therefore 4776.98 N is the minimum force to move the block.

I hope it helps you!

8 0
4 years ago
Roberto was testing how light interacted with a material he had just developed. The initial speed of light was 3.0 × 108 m/s. Th
Zanzabum

The answer to the question would be Refraction.

as we know the two possible answers are refraction and reflection. The questions shows a decrease in speed thus being refraction as a ray in a reflection would not lose its speed. Hope this helps!

4 0
3 years ago
Read 2 more answers
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