Calendar: 1869-1870 Page 517

APPLIED SCIENCES 519 the Interference of Sound waves be made evident by means of tuning-fork What are the laws of vibration of stretched string as regards its length thickness and tension How must string under given tension be divided that it may give the notes of the diatonic scale Explain the existence of nodes and ventral segments in organ pipes and show how their positions may be experimentally determined What series of harmonics can be obtained from single organ pipe 10 Show how to find by the method of mixtures and obtain formula for the specific heat of any substance Describe Regnault's apparatus for that purpose If the specific heat of lead is 0314 what is the mechanical equivalent of the heat required to raise lbs of lead from to 10 Centigrade fHtdjamri SECOND AND THIRD YEARS In the first system of pulleys there are two moveable pulleys turning on rough axes find the mechanical advantage gained when weight is raised by means of them Find the weight raised by force of 10 lbs the radius of the pulleys being inches and of the axes inches and the limiting angle of friction sin-1 If and be the two parallel sides of trapezoid and the distance between them show that the distance of the centre 26 of gravity from the side is An isosceles prism in wood sp gr 918 foot long is cut off from similar isosceles prism also foot long by plane paralltl to the base find the work expended in overturning the remaining portion when it stands on its base on horizontal plane The base is feet height feet and upper side feet across Show that the direction of the smallest pressure which will