What is the velocity of all electromagnetic waves in a vacuum?

the velocity of electromagnetic waves depends upon their wavelength. electromagnetic waves do not propagate forward; hence, their velocity is zero. the velocity of electromagnetic waves is nearly equal to 3 × 108 m/s. the velocity of electromagnetic waves depends upon their frequency. the velocity of electromagnetic waves depends upon their amplitude.

The velocity of electromagnetic waves is nearly equal to 3 × 108 m/s.

Explanation:

All electromagnetic waves travel at the same speed in a vacuum. The value of their velocity does not depend neither on their frequency, nor on their wavelength.

The magnitude of their velocity is known as speed of light (labelled with c), and it is one of the universal physical constant:

The velocity of electromagnetic waves changes instead when they travel in a medium (in particular, their speed decreases)

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.