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3 years ago

Help Please !!!

2 answers:

6 0

1.
The Galápagos Islands contain more different species than any comparable place on the earth.
2.
Their aim is to prevent extinctions.
3.
a gas that absorbs and re-releases heat radiated by the earth
4
acid rain
5.
stratospheric ozone
6
methane
7.
landfill
8.
catalytic converter

Vlada [557]3 years ago

6 0

Answer:

Q1- The correct answer is: Many species unique to the islands may become extinct. Those species won't have another place like Galápagos to develop themselves, ceasing to exist then.

Q2- The correct answer is: Their aim is to prevent extinctions. By preventing it, diversity is protected in different places.

Q3- The correct answer is: a gas that absorbs and re-releases heat radiated by the earth. Those gases are very harmful for our atmosphere when in excessively high amounts, because they increase the greenhouse effect.

Q4- The correct answer is: acid rain. Sulfur can mix with water particles on air and be condensed into rain, lowering water's pH and making it acid.

Q5- The correct answer is: stratospheric ozone. It protects us from sun radiation and also transfers heat for us.

Q6- The correct answer is: greenhouse gases. Those absorb and re-release the heat in our planet, increasing global warming effects.

Q7- The correct answer is: enacting air pollution laws. The smog caused by it harmed thousands of people, and this aspect wasn't controled until then.

Q8- The correct answer is: water vapor. It dissipates heat, and doesn't absorb and re-release it.

Q9- The correct answer is: landfill. The other means of disposal aren't as common as landfill.

Q10- The correct answer is: catalytic converter. It transforms the gaseous emissions into other products by chemical reactions.

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State newton's universal law of gravitation

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3 years ago

what is change in internal energy if 30j of heat are released from a system that does 50j of work on its surroundings

slamgirl [31]

Answer:

-80 J

Explanation:

The first law of thermodynamics states that:

$\Delta U = Q - W$

where

$\Delta U$ is the change in internal energy of the system

Q is the heat absorbed by the system

W is the work done by the system

In this problem, we have:

Q = -30 J is the heat released by the system (negative because the system releases it)

W = +50 J is the work done by the system on the surrounding (positive since it is done by the system)

Therefore, the change in internal energy is

$\Delta U = -30 J - (+50 J) = -80 J$

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4 years ago

How does work affect energy between objects so it can cause a change in the form of energy? Work transfers energy. Work changes

IceJOKER [234]

'Doing work' is a way of transferring energy from one object to another, energy is transferred when a force moves through a distance.

If i explain with formula

Work done (J) = Energy transferred (J)

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3 years ago

a mass m at the end of a spring oscillates with a frequency of 0.78 hz . when an additional 730 g mass is added to m, the freque

ozzi

The value of mass m = 0.506kg

Initial frequency = 0.78Hz

additional mass = 730 g = 0.73kg

New frequency = 0.65 Hz

F = 1/2π $\sqrt{x\\}k/m$

0.78 = 1/2π $\sqrt{k/m}$

additional mass,

0.65 = 1/2π $\sqrt{k/m+0.65}$

1.44 = k/m / k/m+0.73

1.44 = m+0.73 / m

1.44m -m = 0.73

1.44m = 0.73

mass m = 0.506kg

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1 year ago

What is the speed of electromagnetic radiation in free speed

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4 years ago

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