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makvit [3.9K]
3 years ago
13

What is the difference between a mechanical wave and an electromagnetic wave

Physics
1 answer:
ivann1987 [24]3 years ago
5 0

Answer:

1. Electromagnetic waves travel in a vacuum whereas mechanical waves do not.

2. The ripples made in a pool of water after a stone is thrown in the middle are an example of mechanical wave. Examples of electromagnetic waves include light and radio signals.

3. Mechanical waves are caused by wave amplitude and not by frequency. Electromagnetic Waves are produced by vibration of the charged particles.

4. While an electromagnetic wave is called just a disturbance, a mechanical wave is considered a periodic disturbance.

Explanation:

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3 years ago
What is the upper block's acceleration if the coefficient of kinetic friction between the block and the table is 0.16?
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(Missing figure is here: https://www.physicsforums.com/attachments/ch05-p070-jpg.149243/ )

Let's call m_1 = 1.0 kg and m_2=2.0 kg the masses of the two blocks. We can write Newton's second law for both blocks (sum of all forces acting on the block = ma). On block 1, we have two forces: the weight m_1 g pointing downwards and the tension of the string T poiting upwards. On block 2, we have the tension of the string going right and the friction \mu m_2 g going left. Therefore

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6 0
3 years ago
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