Which mass is the same as 0.031 g?
2 answers:
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Answer:
m* 8.0 kg*m²
Explanation:
Rotational inertia of a set of discrete masses (considered point masses), regarding an axis passing through a given point, is just the sum of the products of each mass times the distance to the point of interest.
In the attached picture, neglecting the masses of the rods joining the masses, and taking into account that all masses are equal each other, being equal to m kg, we can write the following equation:
I = m₁*r₁² + m₂*r₂² + m₃*r₃² + m₄*r₄²,
⇒ I = m kg*0 +m kg*2 m² +m kg*2m² + mkg*4m²
⇒ I = m*8 kg*m²
Answer:
✓ A cyclone device accumulates fine particulates from the air by making a dirty air stream flow in a spiral path inside a cylindrical chamber.
✘ It consists of several long and narrow fabric filter bags suspended upside-down in a large enclosure.
✓ When dirty air enters the chamber, the larger particulates strike the chamber wall and fall into a conical dust hopper at the bottom.
✘ Fans blow dirt-filled air upward from the bottom of the enclosure, trapping dirt particles inside the filter bags and releasing clean air from the top.
✓ The top of the chamber has an outlet that lets out cleaned air.
Basically, any of these choices that have the word "filter" are wrong. The point of the cyclone device is to separate the particles without the use of filters. You can tell the right answers based on the picture attached below.
