24) The minimum number of teeth on the pinion which will mesh with any gear without interface for 20 degree full depth involute teeth will be

28) In S.I units, the valu e of the universal gas constant is

29) The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2 , is

30) The flow of water through the hole in the bottom of a wash basin is an example of

31) The stress which vary from a minimum valu e to a maximum value of the same nature (i.e. tensile or compressive) is called