A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium. i. Does the pulse have a definite (a) frequency, (b) wavelength, (c) speed of propagation? ii. If the pulse rate...
Political Fragmentation of Italy Italy had a long history of political fragmentation. Italy was divided into seven states during the middle of the nineteenth century. Of these seven states only Sardinia-Piedmont...
Question The sides of a cyclic quadrilateral taken in an order are 15 cm, 21 cm, 18 cm and 20 cm. If one of its diagonals is 23 cm, then find the other diagonal. (A) 48 cm, (B) 32 cm, (C) 26 cm (D) 30cm ...