PHYSICS MIDDLE SCHOOL

Under normal conditions of temperature and pressure, the gaseous state of a liquid is called _______. A. vapor
B. water
C. smoke
D. ice

Answers

Answer 1
Answer:

The gaseous state of a liquid is called as vapor under normal conditions of temperature and pressure.

Answer: Option A

Explanation:

Vapor is a form of substance floating in air where increasing or decreasing the temperature and pressure changes the state of the substance into gas or liquid.

For example : consider water where heating it to the boiling point makes it as water vapor and reducing its temperature makes it as ice.
Answer 2
Answer:

Under normal conditions of temperature and pressure, the gaseous state of a liquid is called vapor. The correct answer is A.

When a liquid is heated or its pressure is reduced, the kinetic energy of its molecules increases, causing them to gain enough energy to overcome intermolecular forces and transition into the gaseous state. This gaseous form of a substance, while retaining the same chemical composition as the liquid, is called vapor.

Let's examine why the other options are not true:

B. Water: Water specifically refers to the liquid state of H2O molecules. While water can exist as a liquid, solid (ice), or gas (water vapor), under normal conditions, the gaseous state of a liquid is referred to as vapor rather than water.

C. Smoke: Smoke is not the gaseous state of a liquid. It typically consists of tiny solid particles or liquid droplets suspended in the air, resulting from the incomplete combustion of organic matter. Smoke is not directly related to the gaseous state of a liquid substance.

D. Ice: Ice refers to the solid state of water. It is the result of the cooling and freezing of liquid water molecules. Ice is not related to the gaseous state of a liquid substance.

Therefore, under normal conditions of temperature and pressure, the gaseous state of a liquid is called vapor. While water refers to the liquid state, smoke is not directly related, and ice represents the solid state of a liquid substance.

To learn more about Vapor click:

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Answers

As far as I know it's 7

How does a real image differ from a virtual image?

Answers

Real image is formed when the rays of light after reflection or refraction actually meet at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point

Answer:

one contains datta that can take up hard drive or disc space weras a picture takes up space on walls or photo albums

Explanation:

Which scientific principle states that specific groups of organisms have followed, or succeeded, one another in a definite sequence through Earth history? A.
lateral continuity

B.
horizontal continuity

C.
faunal succession

D.
geological succession

Answers

I think the answer is D. Geological succession.

How do you know if a wave is a transverse wave or a longitudinal wave?

please help...

Answers

In a longitudinal wave, the motion of the medium is parallel to the direction of the wave .
A transverse wave is a wave in which the motion of the medium is a right angles to the direction of the wave.

Simplified answer:
Longitudinal wave move left and right.( does not goes up and down) Example-sound wave.
Transverse wave move up and down. Example-water wave, light wave

Which describes why people on earth can see light from the stars in the sky that are so far away? A.
Light from the stars is visible light and travels in longitudinal waves. Longitudinal waves require a medium to travel; therefore, light is reflected off particles of matter in space to be seen on the earth.

B.
Light from the stars is visible light and travels in electromagnetic waves. Electromagnetic waves require a medium to travel; therefore, light is reflected off particles of matter in space to be seen on the earth.

C.
Light from the stars is visible light and travels in electromagnetic waves. Electromagnetic waves do not require a medium to travel; therefore, light travels through the vacuum of space to be seen on the earth.

D.
Light from the stars is visible light and travels as surface to surface waves. Surface waves require a medium to travel; therefore, light travels from the surface of the star to the surface of the earth.

C.?

Answers

Yes, C is correct. It self explains itself as we know light travels through a vacuum ( doesn't need a medium) and light is a type of electromagnetic wave.

(picture) PLEASE HELP ME!! D:

Answers


Ah hah !  I work with these things all the time, so I can read it straight
off the picture.  However, I realize that you probably don't, and can't ...
otherwise you wouldn't need to look for help online.  So I'll try to
explain through it:

-- This is a "topographic map", and those brown lines on it are
"elevation contours". 

-- All of the points on one brown line are all at the same elevation
(altitude, height, etc.), so if you follow one of the brown lines wherever
it goes, you're following a level path.

-- The little numbers somewhere on each brown line tell you the elevation
(above something) of all the points on that line.  You can see lines that
are 35-ft, 45-ft, 50-ft etc.  above whatever the reference is for this map. 

If a line has no numbers on it, then it's halfway between the next lower
line and the next higher line.  There's a line on this map with no number
on it between 35 and 45 ... the elevation of every point on this line is 40.
There's another one between 45 and 50 with no number on it ... every
point on that line must be at elevation of 47.5 .

-- On this kind of map ...

==> The flattest ground is where the lines are far apart, like where
that lake is.  That's where there's a big distance between the 25-ft
line on one side, to the 30-ft line on the other side.  All of the land
between those 2 lines is within 5 feet of the same height.
Same for the land between the 30-ft line and the 35-ft line ... every
point between those 2 lines is within 5 feet of the same height.  It's
a very level place.
The gentlest 'shallowest' slope is always on the path that crosses the
fewest lines, or where the lines you have to cross are the farthest apart. 
That's how we'll find the answer to the question, in just a moment.

==>  The steepest slope is where the lines are close together, like
from 35-ft to 45-ft to 50-ft.  In that short distance, the land rises 15-ft
because it's going up the steep side of Mount Cleveland.

==>  You can also see where the peaks are, like where the 52-ft line
makes a circle.  The peak of the mountain is inside that circle, and from
there, no matter which way you walk from the peak, the land goes down.


-- The absolutely shallowest path to the peak of the mountain would start
on the left side of the map, about 1/3 of the way up from the bottom. 
There seems to be 2 lines there, but if you follow them up and around,
you find that they're both the same 50-ft line.  So from that point on the
edge, all the way to the peak of the mountain, the land only rises a
little more than 2 feet.  But you'd still have to get yourself up to that
starting point, and this path is not one of the choices.

-- If you start at the bottom center just below the end of the lake, OR
if you start from the lower right in Arthur Park, OR if you start at the
upper right in the marsh and swamp up at that end of lake, heading
for the peak of the mountain from any one of those points, you start
from elevation lower than 30 feet, and your hike is flat and pretty level
for a while, until it gets to the 35-ft line.  And then, suddenly, it goes
ZUP ... 17 feet straight up to the top, in a short distance from there,
and crossing lines that are close together.

-- If you start from the bottom left corner, that point is already at an
elevation of about 45-ft, so it only has about 7-ft more to rise from there
to the peak. ALSO ... Starting from there, and going all the way to the
peak, the path goes roughly the same way the brown lines go ... it's
roughly parallel to them ... so there's more distance from one line to
the next one.

So "bottom left" is the place to start.

Note:
The numbers on the lines of a real topographic map are much more
likely to be marked in meters, not feet, so everything I've just described
would be 3.28 times as hard to climb.


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