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kap26 [50]
3 years ago
12

Andre listed some properties of electromagnetic waves.

Physics
2 answers:
melisa1 [442]3 years ago
8 0

Answer:

C.

Electromagnetic waves can transfer energy through empty space.

Explanation:

cause i dont need one

ANEK [815]3 years ago
6 0

Answer: Electromagnetic waves can transfer energy through empty space.

Explanation:

Electromagnetic waves are formed when an electric field comes in contact with a magnetic field. The electric field and magnetic field of an electromagnetic wave are perpendicular to each other. They are also perpendicular to the direction of the wave.

Electromagnetic waves travel with speed of light in vacuum.

Electromagnetic wave does not need a medium to propagate or travel from one place to another. Electromagnetic waves are 'transverse' waves which means that they are measured by their amplitude and wavelength.

Electromagnetic waves do not lose energy when they travel and thus can travel far from its source.

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Answer:

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Explanation:

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an oscilloscope has a time/div setting of 50ms and there are 10 divisions on the time scale. a sine wave on the oscilloscope dis
mamaluj [8]

Answer:

The frequency is f = 6Hz

Explanation:

Given

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         The number of division is  n= 10

The total time for 10 division can be mathematically obtained as

         T_{total} = 10 *50*10^{-3}

                 =500 *10^{-3}s

From the question the time for 3 cycle is

        T_{total} = 500*10^{-3}s

Then the for one cycle which equivalent to the Period(T)  =  \frac{T_{total}}{3}

                                                               = \frac{500 *10^{-3}}{3}

The frequency is generally given as    f = \frac{1}{period} = \frac{1}{T}

    Now substituting values we have  

                              f = \frac{3}{500 *10^{-3}}

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4 0
4 years ago
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