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3 years ago

5

During strengthening heat treatment, the _______ step traps the material in an unstable crystalline structure. a)-Quenching, b)-

Tempering c)-Solution treatment

1 answer:

ZanzabumX [31]3 years ago

4 0

Answer: A) Quenching

Hope this helps

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Answer:

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Explanation:

Given:

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let the velocity of the ambulance be 'vₓ'

Now,

the Doppler effect is given as:

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or

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