1. A glass of hot milk left on the table after some time, it cools down .how does it lose heat to surrounding
1. by conduction
II. BY CONVECTION
III. by radiation
A
I only
B
С I and III ONLY
D 1.II, and III
III only

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

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?

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this