2. Conduction is function of the environment's humidity and the airflow/exchange next to the skin. True False One of the amendments to Regulation 854 that came into force in 2016 is strengthening and improving requirements regarding high visibility safety apparel. 3. True False 4. Cold stress is also known as “thermal strain". True False 5. Dynamic force presents a greater risk of strain than static force. True False 6. In underground climate, auto compression of air adds 4-60C/km to the wet bulb temperature. True False An industrial machinery gives out 112 dBA of noise 1 m away from the source, which requires double hearing protection. You are a worker performing work for 8-hrs around the machinery and you are required to wear double hearing protection. An earplug which has an NRR of 29 dB and an earmuff with an NRR of 31 dB. The suggested 7. derrating percentage of the hearing protections are 60% and 55% of the NRR, respectively. Does the double hearing protection reduce the noise level below 85 dB? True False 8. Dilated eye is an effect of critical hypothermia. True False

Stuck need help! Problem is attached. please view attachment before answering.  Really struggling with this concept. Please show all work so I can better understand ! Thank you so much.

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this isnt what was asked. also copied and pasted from other question could someone show clearer working for 1 and 2 please   i am not sure where the (4v+1) comes from

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