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Delvig [45]
3 years ago
11

Why do copper vessels turn green with the passage of time?

Physics
2 answers:
vodka [1.7K]3 years ago
4 0

Answer:

Copper turns green because of chemical reactions with the elements. Just as iron that is left unprotected in open air will corrode and form a flaky orange-red outer layer, copper that is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a pale green outer layer called a patina

lilavasa [31]3 years ago
3 0

oxidation due to where air hits it

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Explanation:

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How long was a 60 W light bulb turned on if it used a total of 580 J of energy?
icang [17]
Here's the tool you need.  You can't answer the question without this:

           "1 watt"
means
           "1 joule of energy, generated, used, or moved, every second".

So      60 watts  =  60 joules per second

           Total energy generated,
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Divide each side
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7 0
3 years ago
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Gwar [14]

Answer:

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5 0
3 years ago
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Okay, haven't done physics in years, let's see if I remember this.

So Coulomb's Law states that F = k \frac{Q_1Q_2}{d^2} so if we double the charge on Q_1 and double the distance to (2d) we plug these into the equation to find

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So we see the new force is exactly 1/2 of the old force so your answer should be \frac{1}{2}F if I can remember my physics correctly.

9 0
4 years ago
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