Describe how metal like copper conduct electricity

Metals that conduct electricity have this property due to the presence of ‘free’ electrons in their atomic orbitals. These delocalized electrons clouds are, especially, valence electrons of the metal atoms. The electrons are able to move freely in the metallic bond lattice, when induced by an electric current or magnetic field.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

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