Technician A says that measuring piston ring end gap in the cylinder bore will verify that the rings are properly sized for the bore. Technician B says that measuring piston-to-cylinder bore clearance determines the compression ratio of the cylinder. Who is correct?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?