What is the speed of an electromagnetic wave that has a frequency of 7.8x106
Hz?

The speed of electromagnetic wave that has a frequency of Hz is m/s.

Electromagnetic waves:

Higher-frequency electromagnetic waves have less energy. All electromagnetic waves travel across space at the speed of light which is   m/s.

As we know that,

Speed=frequency x wavelength,

It follows that the wavelength will also not change. So the direction, speed, frequency and wavelength of any electromagnetic wave are constant and these properties will not change after emission from a source.

Thus, speed of an electromagnetic wave is fixed and does not change on varying frequencies which is m/s.

OR

The waves travel at the same speed, but the observed frequency depends on any relative motion between the observer and source.

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3. x 10⁸m/s

Explanation:

Given parameters:

Frequency of wave  = 7.8 x 10⁶Hz

Unknown:

Speed of the wave = ?

Solution:

All electromagnetic radiation has  a speed of 3. x 10⁸m/s in free space.

No matter the frequency and wavelength, they all have the same speed which is the same as the speed of light.

a is the answer to this question

explanation:

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.