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3 years ago

Celina has a water sample that’s contaminated with salt and microorganisms. Which method should she use to purify the water?

Physics

2 answers:

agasfer [191]3 years ago

8 0

Answer: evaporation

Explanation:

The boiling of water till it evaporate allow the salt to remain in the pan and the high temperature kills the microorganisms

She should collect the vapor with a cooking pipe in another container

Dmitry_Shevchenko [17]3 years ago

7 0

Celina should perform the following method to get pure water:

Boil the water in a pan, as the water boils it changes into gas (water vapours) these vapours should be cooled down through the process of condensation which changes gas into liquid form, Through this process germs would be killed due to high temperature and the salt will remain in the pan as salt has higher boiling point than water,

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laila [671]

Answer:

f = 2 Hz

Explanation:

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$f = \frac{n}{t}$

where,

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t = time passed = 1 s

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Mars2501 [29]

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Explanation:

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F1=kq1q2/d²...(1)

Where k is the electrostatic constant.

If q1 and q2 is doubled and the distance halved, we will have;

F2 = k(2q1)(2q2)/(d/2)²

F2 = 4kq1q2/(d²/4)

F2 = 16kq1q2/d²...(2)

Dividing equation 1 by 2

F1/F2 = kq1q2/d² ÷ 16kq1q2/d²

F1/F2 = kq1q2/d² × d²/16kq1q2

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F1 = 1/16F2

This shows that the force F will be one-sixteenth of the new force when the charges are doubled and distance halved

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