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Lyrx [107]
2 years ago
10

The soldiers are issued (infrared) goggles to help them see in the dark.

Chemistry
2 answers:
Nostrana [21]2 years ago
7 0

Option B: Creating light by radiating heat.

Even under very dark conditions, there is little bit of light present. Some of it can not be visible to naked eyes as it may be infrared. Infrared goggles are used to collect the available light and amplify it to see it in the dark. Every hot object including human body, emit heat in the form of IR light, using thermal capturing techniques, infrared goggles capture this infrared light making the object visible in dark.

Therefore, creation of light by radiating heat helps the soldiers to see in the dark.


gregori [183]2 years ago
6 0
"outside visible spectrum" would be the right way to define the power of the goggles provided to the soldiers to see at night. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer comes to your great help.
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If you fill your car tire to a pressure of 32 psi (pounds per square inch) on a hot summer day when the temperature is 35°C (95°
Murrr4er [49]
By Gay Lussacs law you can find the pressure. First both temperatures of Celsius must change to Kelvin by adding 273. Temperature one will be 308K and temperature 2 will be 258K
With this info, you can now find the pressure with Lussacs law

P1 = P2
— —
T1 T2

Pressure 1 is given which is 32 psi so just plug it all in and find P2

32 = x
—— ——
308 258

308x = 8256 (Cross multiply)

X = 26.8 (divide both sides by 308)

Answer is 26.8 PSI

This makes sense because as temperature increases pressure increases, as well as when temperature decreases, pressure decreases. Since it’s a colder day the pressure will be lower.
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aalyn [17]

Answer:

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Explanation:

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How much heat is lost when 0.440 mol of steam condenses at 100 °C?
dusya [7]

Answer:

17,890 J

Explanation:

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The formula can be applied if the substance is at its vaporization temperature.

In this problem, we have:

n = 0.440 mol is the number of moles of steam

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And the steam is already at 100C, so we can apply the formula:

Q=(0.440)(40660)=17,890 J

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Explanation:

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