Two people are pushing on a desk to the right with a force 15n each what is the net force on the desk

NEED ASAP 5 complete sentences explaining how burning fossil fuels could potentially affect acid rain in your community and how

Rasek [7]

How do fossil fuels lead to acid rain? How can we stop it? Well, that's what we are going to uncover today! Fossil fuels contain horrible things that contribute to air pollution. Pollutants in the air are one of the main ingredients to acid rain. So, that's how fossil fuels contribute to acid rain. But how can we stop it? We could cut down on fossil fuels. And since they are non-renewable, we need to stop anyway...so why not now. The problem is that most of America are using fossil fuels. But, one community at a time could change this. In conclusion, fossil fuels can lead to acid rain by polluting the air and we can stop this by putting a stop on fossil fuels.
Hope this helped! (sorry i took so long)

7 0

3 years ago

When you lift a box off the ground, gravity opposes your lifting force. A.True B.False

galina1969 [7]

That's true because every action has an equal and opposite reaction and weight is literally the force gravity has on an object.

8 0

3 years ago

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An advantage of electron microscopes compared to light microscopes is that electron microscopes are inexpensive and commonly use

Aleks04 [339]

The statement ‘An advantage of electron microscopes compared to light microscopes is that electron microscopes are inexpensive and commonly used in most biology laboratories allow you to view living cells, while light microscopes do not have higher resolution that allows you to view smaller specimens allow you to view the true colors of the specimens being viewed’ is true. In fact, electron microscope is more efficient than a light microscope due to its mechanism using only light without magnifying the specimen a thousand times.

5 0

3 years ago

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A solution is known as a homogeneous mixture because _[blank]_.

alekssr [168]

Answer:

The solute fully dissolves in the solvent

Explanation:

This is because for a solution to be called a homogeneous mixture, all the solute must be dissolved in the solvent, without the particles of the solute being visible in the solvent.

8 0

3 years ago

1 mole of air undergoes a Carnot cycle. The hot reservoir is at 800 oC and the cold reservoir is at 25 oC. The pressure ranges b

BabaBlast [244]

Answer:

The net work produced is 30.37 KJ

The efficiency of cycle is 72.3%

Explanation:

For the net work produced, we have the formula:

Work = (Th - Tc)(Sh - Sc)(M)

Where,

Th = higher temperature = 800° C + 273 = 1073 k

Tc = lower temperature = 25° C + 273 = 298 k

Sh = specific entropy at higher temperature

Sc = specific entropy at lower temperature

M = molar mass of air

Using, ideal gas table to find entropy. The table is attached.

therefore,

Work = (1073 k - 298 k)(3.0485235 KJ/kg.k - 1.69528 KJ/kg.k)(0.02896 kg)

Work = (775 k)(1.3532435 KJ/kg.k)(0.02896 kg)

Work = 30.37 KJ

Now, for the efficiency (n), we have a formula:

n = 1 - Tc/Th

n = 1 - (298 k)/(1073 k)

n = 0.723 = 72.3 %

5 0

3 years ago