Long-term exposure to noises at high sound level may cause temporary or even permanent [A]. Noise level is measured in [B] and the symbol of the unit is [C].

A worker is exposed to noise according to the following schedule: Exposure level (dB) 92 95 97 102 Period of exposure (Hrs) 3 2 2 1 Permissible duration OSHA standards (Hrs) 6-04 4.0 3-02 1-31 i. Does the daily noise dose exceed as per OSHA standards? ii. If yes, suggest alternate schedule of duration of his stay in different units so that the daily dose is not exceeded.

Refer to the following article to answer the next two questions.  Noise Exposure and Public HealthExposure to noise constitutes a health risk. There is sufficient scientific evidence that noise exposure can induce hearing impairment, hypertension and heart disease, annoyance, sleep disturbance, and decreased school performance. For other effects such as changes in the immune system and birth defects, the evidence is limited. Most public health impacts of noise were already identified in the 1960s, and noise abatement is less of a scientific but primarily a policy problem. A subject for further research is the [clarification] of the mechanisms underlying noise-induced cardiovascular disorders and the relationship of noise with annoyance and non-acoustical factors modifying health outcomes. A high-priority study subject is the effect of noise on children, including cognitive effects and their reversibility. Noise exposure is on the increase, especially in the general living environment, both in industrialized nations and in developing world regions. This implies that in the twenty-first century noise exposure will still be a major public health problem. Which of the following best describes why the authors claim that reducing noise exposure is currently more of a public policy problem than a scientific problem?There is sufficient scientific evidence that noise exposure can induce hypertension and heart disease.⊝The relationship of noise with annoyance that negatively impacts human health is a subject for future research.⊝Most public health impacts of noise were already identified in the 1960s.⊝It is unclear whether negative cognitive effects are reversible in humans.⊝CLEAR ALL

The sound above what level is considered as harmful?(1 Point)above 40 dbabove 60 dbabove 80 dbabove 120 dbThermal pollution of water bodies is due to discharge of(1 Point)chemicals from industriesheat from power plantsagricultural run-off waterwastes from mining

Decibels measure sound(a) intensity(b) frequency(c) loudness level(d) all of the above (8.5)

Sound is a property measured in decibels. The louder a sound is, the higher the decibel level is and the more likely a sound is to damage an individual’s hearing. ------- from a physics standpoint, humans who have a high sensitivity to loud sounds should avoid environments that are characterized by high decibel measurements, including fireworks displays and loud concerts.Which choice completes the text with the most logical transition? Subsequently,eliminateBesides,eliminateNevertheless,eliminateThus,