a heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80 hz.

Which source would provide the most bias-free information about smoking and increased health risks? a) a website created by heart disease patients b) a research study conducted by the mayo clinic eliminate c) a public service message sponsored by tobacco companies d) an online question forum conducted by attorneys for cardiac specialists