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hjlf
4 years ago
13

An old iron battery was discarded in this meadow. The iron in the battery is undergoing a ____ change as it rusts. The rusting i

s changing the battery's color from black to orange.
A) physical
B) chemical
C) environmental
D) none of these changes are occurring

i just want the answer. thanks.
Physics
2 answers:
Tresset [83]4 years ago
4 0
It is a chemical change because the chemical makeup, or components, of the item, in this situation, iron, has been changed.
Irina-Kira [14]4 years ago
3 0
I would say B Chemical but I could be wrong .
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Answer:

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Explanation:

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area of the first cross section, A₁ = 10 cm²

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Apply Bernoulli's equation;

P₁ + ¹/₂ρV₁² = P₂ + ¹/₂ρV₂²

where;

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Q₁ = A₁V₁

V₁ = Q₁ / A₁

V₁ = (2750) / (10)

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P₂ = P₁ + ¹/₂ρV₁² - ¹/₂ρV₂²

P₂ = P₁ + ¹/₂ρ(V₁² - V₂²)

P₂ = 1.2 x 10⁵ Pa + ¹/₂ x 1000 (2.75² - 11²)

P₂ = 1.2 x 10⁵ Pa + 500(-113.438)

P₂ = 1.2 x 10⁵ Pa - 0.567  x 10⁵ Pa

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