when a forensic analyst determines the chemical composition of a preparation that may contain illicit drugs such as heroin, cocaine, or barbiturates, this is an example of what?

well in order to answer this question you have to provide more information < 3

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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