Conifers differ from grasses in the

The radius of the circle $r = \sqrt{3} \sin \theta + \cos \theta$ is

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

An elevator weighing $6000\, kg$ is pulled upward by a cable with an acceleration of $5\, m/s^2$. Taking $g$ to be $10\, m/s^2$,then the tension in the cable is ........... $N$.

The alum used for purifying water is

If $n_1, n_2$,and $n_3$ are the fundamental frequencies of three segments into which a string is divided,then the original fundamental frequency $n$ of the string is given by