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2 years ago

MULTIPLE CHOICE

Physics

2 answers:

Juli2301 [7.4K]2 years ago

8 0

Answer:

answers d

Explanation:

hopes its healp

Diano4ka-milaya [45]2 years ago

5 0

Answer:

Option D. Velocity

Explanation:

Definition: The rate of change of velocity per unit time is called acceleration.

Therefore, Velocity is the answer.

Hoped this helped,

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Depending on circumstances, there are times when divers may wish to be positively, negatively or neutrally buoyant. True. False.

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Answer:

True

Explanation:

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3 years ago

So, RCF, or relative centrifugal force should be equal to RCF = <img src="https://tex.z-dn.net/?f=11%2C18%2Ar%2A%28RPM%2F1000%29

zysi [14]

After plugging all the data into the equation, the result of the relative centrifugal force (RCF) is measured in terms of g.

<h3>What is relative centrifugal force?</h3>

The relative centrifugal force (RCF) or the g force is the radial force generated by the spinning rotor as expressed relative to the earth's gravitational force.

RCF = ac/g

where;

ac is centripetal acceleration
g is acceleration due to gravity

$RCF = \frac{\omega ^2 r}{g} = 1.118\times 10^{-5} \ (RPM)^2 r = 11.18r\ (RPM/1000)^2$

where;

r is radius in cm

<h3>For example, </h3>

Find the maximum RCF of the JS-4.2 rotor can be obtained from its maximum speed (4200 rpm) and its rmax (250 mm);

$RCF = 11.18 \times 25\ cm \times (\frac{4200 \ RPM}{1000} )^2 = 4,930.3 \times g$

Thus, after plugging all the data into the equation, the result is measured in terms of g.

Learn more about relative centrifugal force here: brainly.com/question/26887699

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