Questions about noise: (1) In the Dorben Co., an all-day study revealed the following noise sources: 0.5 hrs., 100 dBA; 1 hr., 80 dBA; 3.5 hrs., 90 dBA; 3 hrs., 95 dBA. What is the dose exposure? (Please keep the integer) (2) John Smith experiences an 8-hour noise dose of 120 by spending one hours in Room #1 with a known noise level of

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Answer the question number 2.

Questions about noise:
(1)
In the Dorben Co., an all-day study revealed the following noise sources: 0.5 hrs., 100 dBA; 1 hr., 80 dBA; 3.5 hrs., 90 dBA;
3 hrs., 95 dBA.
What is the dose exposure?
(Please keep the integer)
(2) John Smith experiences an 8-hour noise dose of 120 by spending one hours in Room #1 with a known noise level of
100 dBA and another seven hours in Room #2 with an unknown noise level.
(Please keep two decimal places)
a) Based on the calculation of 120 noise dose, what is the time permitted in Room #2 with this unknown noise level?
hr
By using computational formula, what is the corresponding noise level in Room #2?
b) What should the maximum noise level be in Room #2 for John Smith to remain within OSHA compliance?
dBA
Also, what is the time permitted in Room #2 with this noise level?
dBA
hr
Transcribed Image Text:Questions about noise: (1) In the Dorben Co., an all-day study revealed the following noise sources: 0.5 hrs., 100 dBA; 1 hr., 80 dBA; 3.5 hrs., 90 dBA; 3 hrs., 95 dBA. What is the dose exposure? (Please keep the integer) (2) John Smith experiences an 8-hour noise dose of 120 by spending one hours in Room #1 with a known noise level of 100 dBA and another seven hours in Room #2 with an unknown noise level. (Please keep two decimal places) a) Based on the calculation of 120 noise dose, what is the time permitted in Room #2 with this unknown noise level? hr By using computational formula, what is the corresponding noise level in Room #2? b) What should the maximum noise level be in Room #2 for John Smith to remain within OSHA compliance? dBA Also, what is the time permitted in Room #2 with this noise level? dBA hr
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