Calendar: 1886-1887 Page 697

APPLIED SCIENCES 699 FIRST YEAH to Describe Bramah's hydrostatic press In press the small piston is inch and the large one inches in diame- ter The small piston is worked by lever the distance from the piston to the fulcrum is inches and that from the fulcrum to the power is 78 inches determine the mechani- cal advantage piece of cork weighing oz is fastened to sinker weighing ozs It is found that they will just sink when placed in water The specific gravity of the cork being 025 what is the specific gravity of the sinker cylinder 20 feet long is half filled with water and inverted with the open end just dipping into vessel of water Find the altitude of the water in the cylinder when the height of the water barometer is 33 feet Describe the manner of making an ordinary cistern barometer stating all the precautions to be adopted for securing good instrument If the density of mercury is 136 what ought to be the length of water barometer inclined to the horizon at an angle of 60 the mercury barometer standing at 30 inches Describe Eoy and Ramsden's apparatus for determining the coefficient of expansion of metal bars What is meant by absolute zero in reference to tempera- ture Compare the mass of 10 cubic feet of air at tempe- rature 10 and under pressure of 76 centimetres of mercury with the mass of 100 cubic feet of air under pressure of 19 centimetres and at temperature of 50 Describe Eegnault's and DanielPs hygrometers and state the advantages which the former instrument has over the latter How would you proceed to find the hygrometric state of the air from either of these instruments Explain the method adopted by Lavoisier and Laplace for obtaining the specific heat of substances substance whose mass was 500 grammes was heated to 100 and was ascertained to have melted 40 grammes of ice when placed in the calorimeter determine the specific heat of the substance