List I | List II | ||
---|---|---|---|
A | Pterophyllum | I | Hag fish |
B | Myxine | II | Saw fish |
C | Pristis | III | Angel fish |
D | Exocoetus | IV | Flying fish |
A block of certain mass is placed on a rough floor. The coefficients of static and kinetic friction between the block and the floor are 0.4 and 0.25 respectively. A constant horizontal force \( F = 20 \, \text{N} \) acts on it so that the velocity of the block varies with time according to the following graph. The mass of the block is nearly (Take \( g = 10 \, \text{m/s}^2 \)):
A wooden block of mass M lies on a rough floor. Another wooden block of the same mass is hanging from the point O through strings as shown in the figure. To achieve equilibrium, the coefficient of static friction between the block on the floor and the floor itself is
A branch of science that deals with the nomenclature, identification, and classification of living organisms and extinct organisms is known as taxonomy. We have millions of species on Earth that are commonly known by their local names.
The nomenclature of an organism is only possible when we correctly know all the specifications of the organism that describes them clearly. The described process of an organism is known as identification.