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hichkok12 [17]
3 years ago
9

How does friction help soccer players

Physics
2 answers:
Lena [83]3 years ago
7 0
When soccer players run they are using friction to propell themselves
Marta_Voda [28]3 years ago
3 0
I think friction can help soccer players by helping them run so the friction can propell em. I just learned this it was pretty easy
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Calculate the change in entropy that occurs in the system when 3.10 mole of isopropyl alcohol (C3H8O) melts at its melting point
ozzi

Answer:

3.10 mole of C3H8O change in entropy is 89.54 J/K

Explanation:

Given data

mole = 3.10 moles

temperature = -89.5∘C = -89 + 273 = 183.5 K

ΔH∘fus = 5.37 kJ/mol =  5.3 ×10^3 J/mol

to find out

change in entropy

solution

we know change in entropy is ΔH∘fus / melting point

put these value so we get change in entropy that is

change in entropy 5.3 ×10^3 / 183.5

change in entropy is 28.88 J/mol-K

so we say 1 mole of C3H8O change in entropy is 28.88 J/mol-K

and for the  3.10 mole of C3H8O change in entropy is 3.10 ×28.88  J/K

3.10 mole of C3H8O change in entropy is 89.54 J/K

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A window air conditioner that consumes 1.4 kW of electricity when running and has a coefficient of performance of 3 is placed in
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If 31.25
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