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Serhud [2]
3 years ago
8

Why is the evaporation of water a physical change and not a chemical change?

Physics
2 answers:
soldi70 [24.7K]3 years ago
6 0
The evaporation of water is a physical change because it isn't undergoing any chemical reactions. In other words nothing is being combined to form a new substance or substances.
Levart [38]3 years ago
5 0
When water turn into gas, it is still water molecules that are gaseous. If you boil a pot of water, the steam that is released is still water. It doesn't change to something else. A chemical change is a change where something completely changed. While a physical property is like a change of state ( solid, liquid or gas)
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Answer:

Here's what I got:

Let's assume that N and E are + directions while S and W are - directions.

Wind is blowing from SW; thus, it is blowing towards NE (or at 45 deg N of E).

Dividing the wind's speed into components:y-component: +70.71 km/h; x-component: +70.71 km/h

Dividing the airplane's speed into components:y-component: -600 km/h; x-component: 0 km/h

Adding the components to get the resulting components:y-component: -529.29 km/h; x-component: +70.71

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To find the angle of direction, use arctan (y/x):arctan (529.29/70.71) = 82.39 deg

ANSWER: velocity = 533.99 km/h at 82.39 deg S of E

Explanation:

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