What do all electromagnetic waves have in common?
they have the same amplitude.
they have the same frequency.
they have the same wavelength.
they have the same speed.

The dictionary definiton of a word reflects the of that word?

The specific department of health and human services (hhs) regulations that apply to research with children are known as: subpart b: additional protections for children involved as subjects in researchsubpart a: the common rulesubpart d: additional protections for children involved as subjects in researchsubpart c: protections for children in research

Epicureanism advocated reason and duty. select the best answer from the choices provided t f