4 years ago

Cuando es más confiable el valor central de una medición

1 answer:

5 0

Answer:

La media es la medida de tendencia central más utilizada y, en general, se considera la mejor medida de la misma. Sin embargo, hay algunas situaciones en las que se prefiere la mediana o la moda.

La mediana es la medida preferida de tendencia central cuando:

Hay algunas puntuaciones extremas en la distribución de los datos.

Explanation:

Espero que esto ayude a marcar el MÁS CEREBRAL !!!

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omeli [17]

Answer:

objects with greater mass should have greater inertia

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3 years ago

The design of a 60.0 cm industrial turntable requires that it has a kinetic energy of 0.250 j when turning at 45.0 rpm. What mus

Aneli [31]

Answer:

The moment of inertia of the turntable about the rotation axis is 0.0225 kg.m²

Explanation:

Given;

radius of the turnable, r = 60 cm = 0.6 m

rotational kinetic energy, E = 0.25 J

angular speed of the turnable, ω = 45 rpm

The rotational kinetic energy is given as;

$E_{rot} = \frac{1}{2} I \omega ^2$

where;

I is the moment of inertia about the axis of rotation

ω is the angular speed in rad/s

$\omega = 45 \frac{rev}{\min} \times \frac{2 \pi \ rad}{1 \ rev} \times \frac{1 \ \min}{60 \ s} \\\\\omega = 4.712 \ rad/s$

$E = \frac{1}{2} I \omega ^2\\\\I = \frac{2E}{\omega ^2} \\\\I = \frac{2 \ \times \ 0.25}{(4.712)^2} \\\\I = 0.0225 \ kg.m^2$

Therefore, the moment of inertia of the turntable about the rotation axis is 0.0225 kg.m²

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hichkok12 [17]

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