1.) Before a predicted frost, orange trees in florida are often sprayed with water in an...
1.) Before a predicted frost, orange trees in florida are often sprayed with water in an attempt to keep the fruit from freezing, explain how this works.
Homework Answers
It is just transfer of heat. When frost comes, sprayed water freezes and it will loose heat in the process. This heat cen be aborbed by fruit and it will help them keep warm. Also once water has converted to ice completely, it will also acts as an insulator to prevent more cold from getting to the tree itself.
This is helpgul because water has large heat caapcity. It takes alot of heat or cold to change the temperature of the water even one degree. So it acts as good insulator of heat
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1.) Before a predicted frost, orange trees in florida are often
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Sort the phase change scenarios according to the
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PART 1
Categories:
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when...
-Heat is transferred to the water from the surroundings
when...
-No net of heat occurs when...
Options:
-...a cloud of steam condenses into liquid water.
-...a block of ice melts.
-...a puddle of water evaporates.
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PART...
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A substance can be sprayed onto crops to prevent frost from forming. If frost didn't form on the fields of an entire continent, would it affect the local air temperature? If not, explain. If so, how would it change? O Yes. The local air temperature would decrease. No. Freezing has no affect on the local air temperature. O Yes. The local air temperature would increase. When a Hershey's chocolate bar, containing no almonds, is cut in half its density doubles....
11 We often see frost on a windshield of car at a clear cold night. A thin layer of water formed from moist ar dew point) on a windshield of a car in a parking lot is exposed to a clear sky at -17°C. The ambient air temperature and convection coefficient are 5°C and 10 W/m2.K. Assume that the emissivity of the thin layer of water is 0.9. Explain how frost can be formed even the ambient air temperature of...
Sort the phase change scenarios according to the
direction of the heat flow in each case.
PART 1
Categories:
-Heat is transferred from the water to the surroundings
when...
-Heat is transferred to the water from the surroundings
when...
-No net of heat occurs when...
Options:
-...a cloud of steam condenses into liquid water.
-...a block of ice melts.
-...a puddle of water evaporates.
-...a block of ice sublimates into water vapor.
-...a puddle of water freezes into ice.
PART...
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