In the hazard time scale discussion, the correction factor is triggered when th is less than t_plume. Which relation represents this condition?

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Multiple Choice

In the hazard time scale discussion, the correction factor is triggered when th is less than t_plume. Which relation represents this condition?

Explanation:
The situation tests how the hazard time scale compares to the plume’s travel time to decide when to apply a correction. The correction factor is used when the hazard time is shorter than the plume travel time, meaning the plume hasn’t yet arrived at the receptor. In symbols, that condition is th < t_plume. If th were equal to or larger than t_plume, the plume would have reached the receptor, and that early-time correction wouldn’t be triggered.

The situation tests how the hazard time scale compares to the plume’s travel time to decide when to apply a correction. The correction factor is used when the hazard time is shorter than the plume travel time, meaning the plume hasn’t yet arrived at the receptor. In symbols, that condition is th < t_plume. If th were equal to or larger than t_plume, the plume would have reached the receptor, and that early-time correction wouldn’t be triggered.

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