$\int_0^2 \frac{2x-2}{2x-x^2} dx$ is equal to

$A$ particle is dropped from a height $H$. Find the time taken by the particle to reach the ground.

$A$ wire elongates by $l \, mm$ when a load $W$ is hung from it. If the wire goes over a pulley and two weights $W$ each are hung at the two ends,the elongation of the wire will be (in $mm$)

The cork cambium, cork, and secondary cortex are collectively called $........$.

The area (in square units) of the triangle formed by the points with polar coordinates $(1, 0)$,$(2, \frac{\pi}{3})$,and $(3, \frac{2\pi}{3})$ is

The salivary gland chromosomes in the dipteran larvae are useful in gene mapping because