Chemistry, 22.07.2019 04:30 catsRlife4573

Is water wet? (this is one of my h. w questions lol)

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Depends on how you look at it. But from my Biology Teacher, it isn't wet. I say the same, as well. For example, when you are in the pool you aren't wet until you get out.

Answer from: Officialavm

Back in the old days, when water was where we needed to spend our time, touch was a lot more important than it is now. We as beings had to be immediately aware if we were going in or out of water. Therefore, the feeling of wet is a primal sensory reminder.

However, thereafter once we ascended onto the land and trees, the feeling of wet became a sensory reminder of something out of the ordinary; it is raining - get shelter, you fell in a creek - start swimming.

The reason it feels as it feels when water touches the skin is actually a complex electro-chemical reaction which works at amazing speeds. The sensory inputs are a combination of:

1. Your body's pH at that moment
2. The water's pH
3. Your body's temperature at that moment
4. The water's temperature
5. The atmospheric pressure
6. Molecular polarity

Answer from: Quest

Alpha particles have positive charge, beta particles have negative charge, and answer 4 just doesn’t make sense. thus, you are left with only one possible answer.

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

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Is water wet? (this is one of my h. w questions lol)...

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