Air moving from the nose to the trachea passes1 through a number of structures. List in order ofthe structures.

The distance of a point (x_1, y_1) from two straight lines which pass through the origin of coordinates is pdot Find the combined equation of these straight lines.

If the distance of a point (x_(1),y_(1)) from each of the two straight lines, which pass through the origin of coordinates, is delta , then the two lines are given by

The chord of contact of tangents from a point P to a circle passes through Qdot If l_1a n dl_2 are the length of the tangents from Pa n dQ to the circle, then P Q is equal to

List out the structures derived from the skin of rabbit.

a. For the calculation of average angle of scattering of a particles by a thin foil, why multiple scattering cannot be ignored in Thomson's model? b. Name the model in which it can be ignored. c. The majority of a particles pass through gases with no deflections. To what conclusion about the atomic structure does this observation lead?