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3 years ago

What is demonstrated by water moving up a straw?

2 answers:

8 0

<span>The answer is C: water is drawn up a straw by cohesion and adhesion. Water molecules stick to one another and the walls of the straw, just like in a capillary.
Cohesion is the attractive force between like materials (between water
molecules).
Adhesion is the attractive force between twounlike materials (such as between
water and a solid container).
Capillary action is the tendency of a liquid to rise innarrow tubes or small openings as a result of adhesion and cohesion.
The liquid water molecules bind to the straw—a process known as adhesion. In the narrow space of the straw, the interaction of cohesion and adhesion causes theliquid to be drawn upward in the straw.</span>

Novay_Z [31]3 years ago

7 0

It's C. Cohesion and Adhesion

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Answer:

Mass, m = 6.18 kg

Explanation:

Given the following data;

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We know that pie, π = 22/7

To find the mass, we would use the following formula;

F = 1/2π√(k/m)

Where;

F is the frequency of oscillation.

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Substituting into the formula, we have;

10 = 1/2 * 22/7 * √250/m

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Taking the square of both sides, we have;

6.36² = (√250/m)²

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Cross-multiplying, we have;

40.45m = 250

Mass, m = 250/40.45

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