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3 years ago

The attraction of liquid particles for a solid surface is due to ____.

Physics

2 answers:

Kisachek [45]3 years ago

8 0

Answer:

the force of adhesion.

Explanation:

The attractive force between the two types of molecules is called adhesive force.

So, the force between the liquid molecule and the solid molecule is adhesive in nature.

The attractive force acts between the two same type of molecules is called cohesive force.

White raven [17]3 years ago

6 0

This attraction occurs from adhesion, also known as adsorption <span />

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What would be the speed of an object just before hitting the ground if dropped 91.5 meters

Aleks04 [339]

Answer:

about 42.35 m/s

Explanation:

Use the equation for accelerated motion (g), and with zero initial velocity that doesn't include time:

$v_f^2=v_i^2+2\,a\,\Delta x$

which for our case would reduce to:

$v_f^2=v_i^2+2\,a\,\Delta x\\v_f^2=0+2\,9.8\,(91.5)\\v_f^2= 1793.4\\v_f=\sqrt{1793.4} \\v_f \approx 42.35$

then the velocity just before hitting would be about 42.35 m/s

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3 years ago

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musickatia [10]

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3 years ago

Which of the following statements CANNOT be supported by Kepler's laws of planetary motion?

horsena [70]

Answer:

B) A planet's speed as it moves around the sun will not be the same in six months.

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A planet's speed as it moves around the sun will not be the same in six months, is a statement that CANNOT be supported by Kepler's laws of planetary motion.

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3 years ago

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A real heat engine operates between temperatures tc and th. during a certain time, an amount qc of heat is released to the cold

tino4ka555 [31]

$q_{c}$ = Heat released to cold reservoir

$q_{h}$ = Heat released to hot reservoir

$W_{max}$ = maximum amount of work

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$t_{h}$ = temperature of hot reservoir

we know that

$\frac{q_{c}}{q_{h}}=\frac{t_{c}}{t_{h}}$

$q_{h} = (\frac{t_{h}}{t_{c}})q_{c}$ eq-1

maximum work is given as

$W_{max}$ = $q_{h}$ - $q_{c}$

using eq-1

$W_{max}$ = $(\frac{t_{h}}{t_{c}})q_{c}$ - $q_{c}$

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3 years ago

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Savatey [412]

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3 years ago

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