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abruzzese [7]
2 years ago
9

Why is copper a pure substance

Physics
1 answer:
belka [17]2 years ago
5 0

Any true element (including copper) is by definition a "pure" substance. As there are no other elements in it, if you were to include any other elements it would become a compound or mixture of elements.

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What does each letter stand for in the formula p=v x i?
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I only know P and V and P is pressure and V is volume 
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3 years ago
Hurricanes are especially destructive because of the abrupt decrease in air pressure that they bring with the winds. Consider a
ivann1987 [24]

Answer:

2.96 × 10^4 N

Explanation:

1 atm = 101325 N/m², pressure inside the airtight room = 1.02 atm, pressure outside due to hurricane = 0.91 atm

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net pressure = 1.02 - 0.91 = 0.11 atm

where 1 atm = 101325N/m²

0.11 atm = 0.11 × 101325 N/m² = 11145.75 N/m²

area of the square wall = l × l where l is the length of the wall in meters = 1.63 × 1.63 = 2.6569

net pressure = net force / area

make net force subject of the formula

net force = net pressure × area = 11145.75 × 2.6569 = 2.96 × 10 ^4 N

8 0
2 years ago
4. Many of the teachers think that if a student sleeps more on the night before the test, then they
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Answer:

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8 0
1 year ago
3. When does the iron core in an electromagnet become magnetic?​
rosijanka [135]

Answer: When electricity flows through it.

Explanation:

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