A 2.10 ✕ 102-g particle is released from rest at point A on the inside of a smooth hemispherical bowl of radius R = 39.5 cm. (a) Calculate its gravitational potential energy at A relative to B

(b) Calculate its kinetic energy at B.

(c) Calculate its speed at B.

(d) Calculate its potential energy at C relative to B.

(e) Calculate its kinetic energy at C.

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?