Please help me! (brainliest)

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Me as soon as possible! me as soon as possible!