For the following measured numbers, the number of significant
figures is indicated in parentheses. which one is incorrect? *
0.00142 (three)
0.0130 (three) 40.04 (two)
400.0 (four)
4x10-2 (one)

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!