Mercury orbits the Sun with an orbital radius of (5.8 × 1010 m). Given that the mass of the Sun is (2.0 × 1030 kg), and the mass of Mercury is (3.3 × 1023 kg). The orbital period of Mercury is?

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?