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3 years ago

When a liquid of gas changes phase into a gas. What is a good example of this process

1 answer:

8 0

If you're asking when a liquid changes to a gas, then i'd say evaporation.
example: when a puddle of water evaporates into thin air
hope this helped maybe?? lemme know if it didn't lol

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What is the purpose of the three R’s of resource management?

svlad2 [7]

The three R's<span> – reduce, reuse and recycle – all help to cut down on the amount of waste we throw away. They conserve natural </span>resources<span>, landfill space and energy.

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4 years ago

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A boy on the edge of a vertical cliff 20-m high throws a stone horizontally outwards with a speed of 20 m/s. It strikes the grou

Komok [63]

Answer:

Horizontal distance from the foot of the cliff is 40 m

Explanation:

Given :

Speed of stone $v = 20\frac{m}{s}$

Vertical distance $d = 20$ m

Gravitational acceleration $g = 10$ $\frac{m}{s^{2} }$

From the kinematics equation,

$d = v_{o} t + \frac{1}{2} at^{2}$

Where $v_{o} =$ initial velocity ( $v_{o} = 0$ )

So time take to fall down,

$t = \sqrt{\frac{2d}{a} }$

$t = \sqrt{4}$

$t = 2$ sec

Now find horizontal distance travel by stone,

$x = vt$

$x = 20 \times 2$

$x = 40$ m

Therefore, the horizontal distance travel by stone is 40 m

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3 years ago

Why evaporation are called surface phenomenon?

Eva8 [605]

The water formed on the surface of the water evaporation loss (evaporation), consisting of plant transpiration water loss (transpiration) is called. Soil near the plant and the resulting water loss is called by evapotranspiration.

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4 years ago

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PLEASE HELP. I NEED THIS FOR TOMMOROW. WILL GIVE BRAINLIEST

Fantom [35]

Ansthethethethethe

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Explanation:

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2 years ago

What does it mean for PE to be dependent on the reference level?

Anastasy [175]

Answer:

The potential energy of an object is the energy possessed by the object due to its position in a gravitational field.

Mathematically, it is given by:

$PE=mgh$

where

m is the mass of the object

g is the acceleration due to gravity at the location of the object

h is the height of the object

As we can see, the potential energy depends on the height of the object, h.

However, this height is relative, since it can be measured using different reference levels.

Generally, the reference level is taken to be the ground; so for example, an object located at the top of a cliff 40 m above the ground, has

h = 40 m

But this value is of course relative, since we can also take the reference level to be the top of the cliff, so in that case, we would have

h = 0

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3 years ago