Author Question: A ten-year exposure to the sound of a riveting machine will cause your threshold of hearing to shift ... (Read 105 times)

Zulu123 · **on:** Jul 29, 2018

A ten-year exposure to the sound of a riveting machine will cause your threshold of hearing to shift from 0 dB to 30 dB. What is the sound intensity corresponding to 30 dB? The normal lowest detectable intensity is 1.0 10-12 W/m2.

What will be an ideal response?

Question 2

A rescue plane flying horizontally at 72.6 m/s spots a survivor in the ocean 182 m directly below and releases an emergency kit with a parachute. Because of the shape of the parachute, it experiences insignificant horizontal air resistance.

If the kit descends with a constant vertical acceleration of 5.82 m/s2, how far away from the survivor will it hit the waves? A) 574 m
B) 4.54 km
C) 406 m
D) 602 m