Calendar: 1866-1867 Page 480

482 APPLIED SCIENCES vertical the height being 10 feet and the radius of the base feet Show that the pressure on the base is three times the weight of the fluid How is this shown experimentally 11 Two metals of which the specific gravities are 10-8 and 7'6 when mixed in certain proportions form an alloy whose specific gravity is 872 Find the ratio of the volumes of the metals in the alloy 12 How may the specific gravity of solid be found by means of the hydrostatic balance What plan must be adopted when the solid is lighter than its own bulk of fluid piece of cork weighing lb is attached to 4lbs of metal of specific gravity and the whole weighs 5J ounces in water Find the specific gravity of cork II ractiral tfStonutro SECOND YEAR The plan and elevation of line are parallel on the paper each is 2" long and makes an angle of 50 with the ground line Determine the length of the line itself The horizontal and vertical traces of plane coincide on the paper and make an angle of 50 with the ground line Deter- mine the angles the plane makes with the two co-ordinate planes square of 15 side on the paper is the plan of quadri- lateral the point being 1" Β 165 23 above the paper Determine the form of ABCD Determine by their plan and elevation three indefinite lines each perpendicular to the other two one being inclined at 20 another at 35 to the paper Draw the plan of cube of 35 edge when two edges are inclined at 20 and 35 to the paper Draw the elevation the ground line being parallel to any diagonal of the solid sphere of 1" radius lies on the paper Determine two planes perpendicular to each other to touch the sphere one being inclined at 50 the other at 70 to the paper