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4 years ago

Why are renewable sources of energy better than nonrenewable sources?

Physics

2 answers:

Anton [14]4 years ago

5 0

Because it does not produce waste, thus it doesn't harm the environment. also renewable sources are infinite.

zhuklara [117]4 years ago

5 0

Answer:

Explanation:

Renewable energy such as solar energy, wind energy, geothermal energy and hydropower are inexhaustible and obtained from natural sources. This energy can be replenished. Whereas, the non-renewable energy sources such as coal and petroleum products are exhaustible energy. They cannot be replenished. It takes millions of years to form non-renewable energy. The non-renewable energy cause pollution but renewable energy is environment-friendly without being depleted. Therefore, renewable sources of energy better than non-renewable sources.

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Why should people pay attention to scientists when making decisions? A)scientist are the smartest people B) Scientist make up fa

MrRa [10]

Answer:

C) scientist use experiments to test their ideas

3 0

4 years ago

Read 2 more answers

Mirrors produce images by doing which of the following to light?

Gemiola [76]

Answer: C

Reflection

Explanation: Light travels in a straight line. Reflection is one of the properties of light. And this is the property in which mirror make use of. The ability of light to bounce back. It's this bouncing back characteristics of light ray that eventually produce the image of an object by the mirror.

If the light ray is absorbed, no image will be produced.

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3 years ago

(1 point) A rectangular tank that is 3 feet long, 9 feet wide and 12 feet deep is filled with a heavy liquid that weighs 110 pou

Aloiza [94]

Answer:

Explanation:

Work in pumping water from the tank is given as

W = ∫ y dF. From a to b

Where dF is the differential weight of the thin layer of liquid in the tank, y is the height of the differential layer

a is the lower limit of the height

b is the upper limit of the height.

We know that, .

F = ρVg

Where F is the weight

ρ is the density of water

V is the volume of water in tank

g is the acceleration due to gravity

Then,

dF = ρg ( Ady)

We know that the density and the acceleration due to gravity is constant, also the base area of the tank is constant, only the height that changes.

Then,

ρg = 62.4 lbs/ft³

Area = L×B = 3 × 9 = 27ft²

dF = ρg ( Ady)

dF = 1684.8dy

The height reduces from 12ft to 0ft

Then,

W = ∫ y dF. From a to b

W = ∫ 1684.8y dy From 0 to 12

W = 1684.8y²/2 from 0 to 12

W = 842.4 [y²] from y = 0 to y = 12

W = 842.4 (12²-0²)

W = 121,305.6 lb-ft

3 0

3 years ago

Why can water stay in bucket if you spin it upside down, if you spin the bucket fast enough? What are some practical application

Aleksandr [31]

Answer:

Water stay in the bucket if the bucket is spin upside down and fast because due to centripetal force.

Explanation:

When the bucket is at highest point in the circular motion then there will be three forces work centripetal force in upward direction ann normal and weight will work in downward direction.

By newton law,

centripetal force=weight + normal force.

$\frac{mv^{2} }{r}=N+mg\\ N=\frac{mv^{2} }{r}-mg$

If the water will stay in the bucket in upside direction then there will be normal force is positive which means the centripetal force is greater than weight.

And to increase the centripetal force velocity should be greater because it depends on velocity.

The practical application of centripetal force are discussed below:

(a) Turning of the car on a banked road or in circular track.

(b) Revolution of the earth around the sun.

7 0

4 years ago

4-12. The morning inspection of the tank farm finds a leak in the turpentine tank. The leak is repaired. An investigation finds

bonufazy [111]

Answer:

a) $V=759.8727\ ft^3$