Response:
a)
, b) 
Clarification:
a) The absolute pressure at a depth of 27.5 meters is:



b) The force applied by the water is:



A left turn lane is designated for vehicles making left turns. Vehicles must completely enter this lane and wait for a clear path before proceeding with the turn. It is not permissible for a vehicle to be partially in and out of the lane, as this obstructs traffic and creates hazardous conditions.