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3 years ago

How does the Earth release energy back into the atmosphere?

1 answer:

8 0

In general, the Earth releases energy back to the atmosphere through reflection, evaporation, and radiation. The Earth gets energy from the sunlight, part of which it absorbs, while part it reflects backwards, thus giving energy to the atmosphere. Also, the heating up of the Earth by the absorbed sunlight, radiates back in the lower layers of the atmosphere, again giving back energy to it. The water vapor is another way in which the Earth gives back energy tot he atmosphere as through the evaporation, the water vapor gets into the lower parts of the atmosphere and gives energy to it.

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The volume of gas in a container is 125,000 liters, and the pressure is 1.2 atmospheres. Suppose the temperature remains constan

Natali [406]

Answer:

the new volume =93,750 Liters

Explanation:

From Boyles law

P1V1 = P2V2

1.2 X 125000 = 1.6 X V2

V2 = 93,750 Liters

5 0

3 years ago

A student drops a water balloon from tall building trying to hit her roommate on the ground below (and misses). After dropping t

Fudgin [204]

Answer:

H = 70.4 m

Explanation:

Here first of all the balloon will drop to the the floor under free fall motion and then the sound of splash will come up at constant speed

so we will say that if the total height is H

so the time to fall is given as

$H = \frac{1}{2}gt^2$

now we have

$t_1 = \sqrt{\frac{2H}{g}}$

also we know that the time to come the sound upwards is

$t_2 = \frac{H}{v}$

so we will have

$t_1 + t_2 = T$

$\sqrt{\frac{2H}{g}} + \frac{H}{v} = T$

now plug in all data

$\sqrt{\frac{2H}{9.81}} + \frac{H}{331} = 4$

by solving above equation we have

H = 70.4 m

4 0

4 years ago

Why do you not come to thermal equilibrium on a cold day

Tju [1.3M]

Two physical systems are in thermal equilibrium if no heat flows between them when they are connected by a path permeable to heat. Thermal equilibrium obeys the zeroth law of thermodynamics. A system is said to be in thermal equilibrium with itself if the temperature within the system is spatially and temporally uniform.

Systems in thermodynamic equilibrium are always in thermal equilibrium, but the converse is not always true. If the connection between the systems allows transfer of energy as heat but does not allow transfer of matter or transfer of energy as work, the two systems may reach thermal equilibrium without reaching thermodynamic equilibrium.

3 0

4 years ago

Why do we use semiconductor instead of metal in thermopile?

serg [7]

Answer:

Metal or conductors , what they do is that they allow full flow of current that is conduction is due to free electrons only and there is literally no gap between valence and conduction band,so free electrons can easily jump into conduction band from valence band.

And now lets talk about insulators,what they do is that they don’t allow any current to flow i.e they act as strong dielectric,and gap between valence band and conduction band is so big that free electron can never come into conduction band from valence band ever if they try is for eternity…

But semiconductors can act both as an insulator as well as a conductor based on the voltage input. Hence, there is a possibility to control the current flow in semiconductors , so they don’t just relax and let the current pass by, they can control it, and that is why you can design logic circuits with it.

But as the temperature increases free electrons from valence band of insulators can jump to conduction band and can cause a little conductivity, and then the insulator will act as a semi-conductor.

6 0

3 years ago

HURRY

Mrac [35]

Answer:

It’s b

Explanation:

Everyone else is wrong and I tried this and got it right

6 0

3 years ago

Read 2 more answers