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Pani-rosa [81]
4 years ago
7

Explain two ways that technology has had a positive impact on the environment and two ways that it has had a negative impact on

the environment
Physics
2 answers:
stepladder [879]4 years ago
5 0

Technology is helpful for the environment because the technology we have has and is saving people and helping us live longer, while at the same time it is depleting our ozone layer by the car exhaust and polluting the environment by the byproducts of the technology we use today.

Natasha2012 [34]4 years ago
4 0

Positive impacts of technology on environment

Some technological decisions put environmental and economic concerns in competition with one another, while others have positive effects for both the economy and the environment. Reusing, recycling, and using fewer resources can reduce environmental impacts.

Negative impacts

Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable energy sources by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.


Hope I helped!

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Answer:

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An energy plant produces an output potential of 1500 kV and serves a city 143 km away. A high-voltage transmission line carries
jekas [21]

Answer:

2123.55 $/hr

Explanation:

Given parameters are:

V_{plant} = 1500 KV

L = 143 km

I = 500 A

\rho = 2.4 \Omega / km

So, we will find the voltage potential provided for the city as:

V_{wire} =IR = I\rho L = 1500*2.4*143 = 514.8 kV

V_{city} = V_{plant}- V_{wire} = 1500-514.8 = 985.2 kV

Then, we will find dissipated power because of the resistive loss on the transmission line as:

P = I^2R = I^2\rho L=500^2*2.4*143 = 8.58*10^7 W

Since the charge of plant is not given for electric energy, let's assume it randomly as x =  \frac{\dollar 0.081}{kW.hr}

Then, we will find the price of energy transmitted to the city as:

Cost = P * x = 8.58*10^7 * 0.081 * 0.001 = 6949.8 $/hr

To calculate money per hour saved by increasing the electric potential of the power plant:

Finally,

I_{new} = P/V_{new} = I/1.2\\P_{new} = I_{new}^2R_{wire}\\Cost = P_{new}/1.44=6949.8/1.44 = 4826.25 $/hr

The amount of money saved per hour = 6949.8 - 6949.8/1.44 = 2123.55 $/hr

Note: For different value of the price of energy, it just can be substituted in the equations above, and proper result can be found accordingly.

3 0
3 years ago
Two harmonic sound waves reach an overseveer simulatenouslt. the obsever hears the sound intensity rise and fall with a time of
irakobra [83]

Answer:

dF=2.5Hz

Explanation:

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Time T=0.2sec

Generally the Period is given as

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LuckyWell [14K]
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