Alkali metals lose electrons from which orbitals?

What do gymnosperms and angiosperms produce respectively for sexual reproduction?

What is the maximum number of rectangular components into which a vector can be split in space?

The coefficient of $x^5$ in the expansion of $(1+x^2)^5(1+x)^4$ is:

At a certain place,a magnet makes $30$ oscillations per minute. At another place where the magnetic field is double,its time period will be:

$A$ particle of mass $m$ is moving in a circular path of constant radius $r$ such that its centripetal acceleration $a_c$ is varying with time $t$ as $a_c = k^2rt^2$. The power delivered to the particle by the forces acting on it is