9. Determine the wet bulb globe temperature (WBGT) and work-rest regimen for an employee working outdoors where the ambient air temperature (ta) is measured 37 oC, globe thermometer temperature (tg)...

9. Determine the wet bulb globe temperature (WBGT) and work-rest regimen for an employee working outdoors where the ambient air temperature (ta) is measured 37 oC, globe thermometer temperature (tg) 39 oC, and natural wet-bulb temperature (tnw) 28 oC. Workload is moderate and the worker acclimatized to heat. Please show work. a. WBGT=23.1 oC; Each hour 50% work 50% rest b. WBGT=31.1 oC; Each hour 25% work 75% rest c. WBGT=41.1 oC; Each hour 100% work 0% rest d. WBGT=31.1 oC; Each hour 75% work 25% rest e. None of the above