4 years ago

The quantity of heat from a chemical reaction comes from

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1 answer:

Tomtit [17]4 years ago

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A tuba may be treated like a tube closed at one end. If a tuba has a fundamental frequency of 88.4 Hz, determine the first three

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Answer with Explanation:

We are given that

Fundamental frequency,f=88.4 Hz

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For third overtone

$f'=7\times 88.4=618.8Hz$

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A girl playing tug-of-war with her dog pulls the dog a distance of 8.0m by exerting a force at an angle of 18° with the horizont

AnnZ [28]

Answer:

25 N

Explanation:

Work is a product of force and perpendicular distance moved.

W=Fd where F is force exerted and d is perpendicular distance.

However, for this case, the distance is inclined hence resolving it to perpendicular so that it be along x-axis we have distance as $dcos\theta$

Therefore, $W=Fdcos\theta$

Making F the subject of the formula then

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