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nadezda [96]
3 years ago
12

I need help solving both of the questions fast please!!!!!!

Physics
1 answer:
sergey [27]3 years ago
6 0
I haven´t learned that yet I´m sorry.
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Explain why materials such as plastic foam, feathers, and fur are poor conductors of heat.
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The atoms of some materials have no free electrons in their outer orbits. These electrons are busy doing other jobs, like being shared in the orbits of two adjacent atoms. They are so closely held that it is very difficult to pull them away. Most compounds of carbon and hydrogen are like this. 

<span>Plastics, whose molecules are made from long combinations of carbon and hydrogen atoms, have few or no free electrons. This means that plastics are poor conductors of electricity (and they are also poor conductors of heat). hope that helped.</span>
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Which vector below goes from (0,0) to (1,-3)?
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I think D. It starts at (0.0) and goes to the correct points so it makes sense

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Mass of water= 357g density water= 1.0g/cm3
aliya0001 [1]

m=357g\\\\\rho=1.0\ \dfrac{g}{cm^3}\\\\\rho=\dfrac{m}{V}\to V=\dfrac{m}{\rho}\\\\\text{substitute}\\\\V=\dfrac{357g}{1.0\frac{g}{cm^3}}=375g\cdot1.0\dfrac{cm^3}{g}=375\ cm^3

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3 years ago
What materials in a torch are conductors and insulators?
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4 years ago
When the force acting on the body equal to acceleration?
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Answer:

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