A 54 kg pilot flies a jet trainer in a half vertical loop of 1200 m radius so that the speed of the jet decreases at a constant rate. Knowing that the pilot's apparent weights at points A and C are NA = 1680 N and NC = 350N, respectively, determine the total force exerted on her by the seat of the jet trainer when the trainer is at point B.

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?