Calendar: 1877-1878 Page 605

ENGINEERING AND APPLIED SCIENCES 603 the actual lengths of such chain at and 20 The coeff of linear expansion of steel 0000116 What is meant by the "specific heat of substance The inner vessel of calorimeter of copper weighs 30 grammes and the specific heat of copper 095 50 grammes of iron whose specific heat 11 are thrown into 500 grammes of water in the calorimeter at temperature of 15 Find the temperature of the water after the immersion of the iron the temperature of the iron before immersion being 100 Describe Daniell's Hygrometer and the method of using it for estimating the hygrometric state of the air How many units of heat will be conducted in an hour through the walls of building if their area be 60 sq metres their thickness 20 centimetres their material of stone whose absolute conductivity units centimetre gramme second 01 and the difference of temperature between outside and inside 20 What is radiant heat" Describe two methods of proving that the intensity of radiant heat varies inversely as the square of the distance from the source of heat -jBecfiamc SECOND AND THIRD YEARS Weights of lbs are hung at points distant respectively ft from one end of uniform lever ft in length and weighing lbs Find the point about which the lever would balance bullet fired vertically upwards enters and becomes im- bedded in block of wood which has fallen vertically downwards through height of 56j ft and the block is for the moment brought to rest by the impact The weight of the bullet is oz and its velocity just before the collision was 500 ft per second find the weight of the block value of 32 Two masses of Ρ and lbs are fastened to the ends of string which passes over smooth pulley find the tension of the