Question

3. Derive the following relationships using dimensions: (a) The velocity v of a wave along a
plucked string depends on the tension 'T' in the string, its length 'I' and the mass 'm' of the
string. (b) The terminal velocity 'v' of a steel sphere moving under gravity through a viscous
liquid depends on the weight of the sphere "mg', the coefficient of viscosity 'n' and the radius of
the sphere 'r'. please help me to solve the question it's urgently needed...​

Answer 1

Answer:

A sphere of mass 50gm is suspended by a string in an electric field of intensity 5N/C acting vertically upward. If the tension in the string is 520 millinewton, the charge on the sphere is (g=10m/s2)

Explanation:

i can't understand......