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Salsk061 [2.6K]
3 years ago
10

Which statement is true regarding copper's ability to conduct electricity?

Physics
2 answers:
zhenek [66]3 years ago
7 0
<span>Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.</span>
Rasek [7]3 years ago
5 0

Answer:

(i) Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.

Explanation:

Copper atoms has loosely held electrons in their outer shell. These electrons are not permanently associated with the copper atoms, instead They make a cloud around the outside of these atoms and are able to move freely and quickly through the solid.  

Option (ii) cannot be selected because copper is a good conductor. For the conductivity, free movement of electrons is a condition which is unsatisfied in the (iii). In (iv), it is given that copper has 1 electron in the outermost shell which can flow to the other copper atoms which is not true because in copper many atoms can flow to other atoms.

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A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied
Vika [28.1K]

We have that for the Question "A 2kg book is held against a vertical wall. The <em>coefficient </em>of friction is 0.45. What is the minimum force that must be applied on the <em>book</em>, perpendicular to the wall, to prevent the book from slipping down the wal" it can be said that  the minimum force that must be applied on the <em>book is</em>

  • F=44N

From the question we are told

A 2kg book is held against a vertical wall. The <em>coefficient </em>of friction is 0.45. What is the minimum force that must be applied on the <em>book</em>, perpendicular to the wall, to prevent the book from slipping down the wal

Generally the equation for the  Force  is mathematically given as

F=\frac{mg}{\mu}\\\\F=\frac{2*9.8}{0.45}\\\\

F=44N

Therefore

the minimum force that must be applied on the <em>book is</em>

F=44N

For more information on this visit

brainly.com/question/23379286

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