Question

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1⃣. What are electromagnetic waves?

2⃣. Through what electromagnetic waves travel?

3⃣. What is mechanical wave?

4⃣. Name medium for propagation for mechanical waves.

5⃣. Which has greater speed
(a). electromagnetic wave
(b). mechanical wave

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Answer 1

1))) In physics, electromagnetic radiation refers to the waves of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays.

2)))These changing fields formelectromagnetic waves.Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means thatelectromagnetic waves cantravel not only through air and solid materials, but also throughthe vacuum of space.

3)))
A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission—the material—is limited. Therefore, the oscillating material does not move far from its initial equilibrium position

4)))
A mechanical wave requires an initial energy input. Once this initial energy is added, the wavetravels through the medium until all its energy is transferred. In contrast, electromagnetic wavesrequire no medium, but can still travel through one

5)))
E is the electric field vector, andB is the magnetic field vector of the EM wave. ... The speed of any electromagnetic waves in free space is the speed of light c = 3*108 m/s. Electromagnetic waves can have any wavelength λ or frequency f as long as λf = c.

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Answer 2

Answer :

1) Electromagnetic waves are waves which do not require any medium to travel. They carry electromagnetic radiant energy with them.




2) They travel through vacuum.




3) Mechanical waves are those waves which require a medium for propagation.



4) It could be any of the three mediums i.e solid, liquid , and gas.



5) Electromagnetic waves move at a greater speed than mechanical waves.