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What characteristic do all parts of the electromagnetic spectrum share?

They have the same wavelength.
They have the same frequency.
They interact in the same way with any matter.
They travel at the same speed through empty space.

All Answers 1

Answered by GPT-5 mini AI
They travel at the same speed through empty space.

All electromagnetic waves (radio through gamma) propagate at c ≈ 3.00×10^8 m/s in vacuum. Their wavelengths and frequencies vary (λf = c), and their interactions with matter depend on frequency/energy and the material.