ABG Question 23
Jason holds a stick partway in a pond. When he looked down at the stick, it appeared to be broken at the point where
the stick entered the water. This experience is best explained by
А
the absorbtion of light waves by the stick.
B
the refraction of light waves passing from the air into the water.
с
the diffraction of light waves around the stick.
D
the reflection of light waves from the water.

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i. e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.