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Kay [80]
3 years ago
8

Describe how switching the desk lamp on and off shows that light waves transfer energy

Physics
1 answer:
givi [52]3 years ago
6 0
I don’t know this one
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How do lines of latitude affect how direct or indirect the Sun’s rays are on the Earth?
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2 years ago
A bicycle wheel has spokes for support. Each spoke extends from the center of the wheel to the rim. Which method can be used to
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3 years ago
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Consider the following four objects: a hoop, a solid sphere, a flat disk, a hollow sphere. Each of the objects has mass M and ra
Svetlanka [38]

Answer:

Hoop.

Explanation:

The angular acceleration performed at a given torque:

\alpha = \frac{\tau}{I}

The moments of inertia of each element are described below:

Hoop

I = M\cdot R^{2}

Solid sphere

I = \frac{2}{5}\cdot M \cdot R^{2}

Flat disk

I = \frac{1}{2}\cdot M \cdot R^{2}

Hollow sphere

I = \frac{2}{3}\cdot M \cdot R^{2}

The greater the moment of inertia, the greater the torque to obtain the same angular acceleration. Therefore, the hoop requires the largest torque to receive the same angular acceleration.

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