Ionization occurs at energies greater than 5 × 10^–19 j. is there a risk of exposure to ionizing radiation if a radar speed gun is pointed at a person instead of a car?

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What happens to energy in an open system?

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.