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zvonat [6]
3 years ago
15

Can a chemical change be undone?​

Physics
2 answers:
Ksivusya [100]3 years ago
6 0

Answer:

no

Explanation:

because it will bind together in the molecular level

Zigmanuir [339]3 years ago
3 0
Because chemical changes result in different substances, they often cannot be undone. Some chemical changes can be reversed, but only by other chemical changes.
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3 years ago
A mechanical wave starts when matter is disturbed by a source of ______.
Gwar [14]

Answer:

MATERIAL MEDIUM

Explanation:

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5 0
3 years ago
The core of a 400 Hz aircraft transformer has a net cross-sectional area of 13 cm2. The maximum flux density is 0.9 T, and there
jenyasd209 [6]

Answer:

32.76 Volt

Explanation:

frequency, f = 400 Hz

Area of crossection, A = 13 cm²

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According to the Faraday's law of electromagnetic induction, the induced emf is equal to the rate of change of magnetic flux.

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Time is defined as the reciprocal of frequency.

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3 years ago
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