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2 years ago

6. The image to the right shows a moment of inertia

Physics

1 answer:

Trava [24]2 years ago

7 0

The moment of inertia is the rotational analog of mass, and it is given by

the product of mass and the square of the distance from the axis.

The moment of inertia changes as the position of the weight is changed, which indicates that; statement is incorrect

Reasons:

The weight on each arm that have adjustable positions can be considered as point masses.

The moment of inertia of a point mass is I = m·r²

Where;

m = The mass of the weight

r = The distance (position) from the center to which the weight is adjusted

Therefore;

The moment of inertia, I ∝ r²

Which gives;

Doubling the distance from the center of rotation, increases the moment of inertia by factor of 4.

Therefore, the statement contradicts the relationship between the radius of rotation and moment of inertia.

Learn more about moment of inertia here:

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If a conductor wire is heated, its resistance decreases and conductivity increases.

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3 years ago

The watermark can be of different types depending on the application. A watermark will resist manipulations of the media. Howeve

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The first blank is robust watermark; a robust watermark will not resist tampering.

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<h3>What is a watermark?</h3>

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The watermark can be of different types depending on the application and they include:

A robust watermark will not resist tampering.
A fragile watermark will resist manipulations of the media.

Thus, The first blank is robust watermark; a robust watermark will not resist tampering.

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2 years ago

What are the characteristics of a nebulae? (Select all that apply.)

erica [24]

Answer:

B. contain hydrogen

C. clouds of gas and dust

E. needed to create a star

Explanation:

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Some of the examples of stars are; Vega, Sun (closest to planet Earth), Antares, Betelgeus, Canopus, etc.

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2. A protostar forms as mass increases.

3. Nuclear fusion begins under high pressure.

Scientists have been able to understand and discover that, gravity pulled materials (low-density cloud of interstellar gas and dust known as a nebula) together forming the planetary bodies in our solar system.

A dark nebula can be defined as an interstellar cloud that is so dense as a result of high concentration of gas and dust and as such it obscures the visible wavelengths of light from stars behind it, thus appearing completely opaque (dark patch) in front of a bright emission nebula or in regions having plenty stars.

The characteristics of a nebulae are;

I. It contain hydrogen.

II. Clouds of gas and dust

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3 years ago

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3 years ago

How does surface area affect the amount of air resistance an object experiences?

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