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Nookie1986 [14]
3 years ago
8

Which of the following is not accurate when describing solids? A. Solids are better conductors of heat than liquids B. The amoun

t of pressure exerted by a solid is solely dependent on its mass. C. Solids with many air pockets are good insulators. D. Molecules in solids are closer together than molecules in liquids.
Physics
2 answers:
Vinvika [58]3 years ago
4 0
<h3><u>Answer</u>;</h3>

B. The amount of pressure exerted by a solid is solely dependent on its mass.

<h3><u>Explanation</u>;</h3>
  • Pressure is the force per unit area exerted by a substance on a surface.
  • <em><u>Solids exerts pressure on surfaces, which does not depend on the mass of the solid, but depends on the area of contact on the solid and the force applied.</u></em>
  • <em><u>Since pressure refers to force exerted per unit area. Pressure can be increased by either increasing the size of the force or reducing the area over which the force acts.</u></em>
  • <em><u>A solid with a larger surface area where the force acts will exert less pressure compared to a solid surface with a small area where the force acts. </u></em>
Elza [17]3 years ago
3 0
B. The amount of pressure exerted by a solid is solely dependent on its mass
i just took the test
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Where, r : The distance between two bodies (sphere).

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 Determine the angle (β) between vectors rbc and rab using cosine rule:

                   cos ( \beta  ) = \frac{rab^2 + rbc^2 - rac^2}{2*rab*rbc} \\\\cos ( \beta  ) = \frac{0.25^2 + 0.15^2 - 0.2^2}{2*0.25*0.15}\\\\cos ( \beta  ) = 0.6\\\\\beta  = 53.13^{\circ \:}

- Now determine the scalar gravitational forces due to sphere A and B on C:

       Between sphere A and C:

                  Fac = G*ma*mc / rac^2

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                  vector Fac = Fac* [ - cos (α) i + - sin (α) j ]

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                  Fbc = G*mb*mc / rbc^2

                  Fbc = (6.674×10−11)*60*0.2 / 0.15^2  

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