Speed of transverse wave of a straight wire (mass=6.0 g, length=60 cm and area of cross-section=1.0 mm2) is 90 ms-1. If the young's modulus of wire is , the extension of wire over its natural length is:
Consider a solid sphere of Radius R and mass density The minimum density of a liquid in which it will float is :
A small spherical droplet of density d is floating exactly half immersed in a liquid of density p and surface tension T. The radius of the droplet is (take note that the surface tension applies an upward force on the droplet) :