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stich3 [128]
3 years ago
7

Some elements have a low degree of freedom and high intermolecular forces between its molecules. These elements are ________ at

room temperature.
Physics
2 answers:
dimulka [17.4K]3 years ago
6 0

Answer: Solid

Explanation:

because solids particles close together making it harder for them to move.

Inga [223]3 years ago
3 0
<h3><u>Answer;</u></h3>

Solid

<h3><u>Explanation</u>;</h3>
  • Some elements have a low degree of freedom and high intermolecular forces between its molecules. These elements are solid at room temperature.
  • Elements can be classified based on physical states, or the states of matter. At room temperature and pressure the Physical States, or states of matter, are solids, gases or liquids and these are referred to as the 3 states of matter.
  • Some elements such as most metals are solids at room temperatures, others such as oxygen, hydrogen, nitrogen, etc are a gases and others are liquids.
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Answer:

<em>1.</em> <em>39068.07 N</em>

<em>2. 19534.036 N</em>

Explanation:

depth of water h = 10 m

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Left plug has diameter = 50 cm = 0.5 m

radius = 0.5/2 = 0.25 m

height = 1 cm = 0.01 m

<em>height below tank surface = 10 - 0.01 = 9.99</em>

pressure at this depth =  1000 x 9.81 x 9.99 = 98001.9 Pa

<em>total pressure = Patm + P = 101325 + 98001.9 = 199326.9 Pa</em>

surface area of plug = πr^{2} = 3.142 x 0.25^{2} = 0.196 m^{2}

<em>force required to lift left plug = pressure x area</em>

F =  199326.9 x 0.196 = <em>39068.07 N</em>

<em>The right side is a hemisphere with the same diameter, therefore surface area is half of the left plug</em>

A = 0.196/2 = 0.098 m^{2}

force F required to lift right plug =  199326.9  x 0.098 =<em> 19534.036 N</em>

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