During embryonic development,the establishment of polarity along the anterior/posterior,dorsal/ventral,or medial/lateral axis is called:

If $b$ and $c$ are the lengths of the segments of any focal chord of a parabola $y^2 = 4ax$,then the length of the semi-latus rectum is:

If a ladder weighing $250 \ N$ is placed against a smooth vertical wall and the coefficient of friction between the ladder and the floor is $0.3$,what is the maximum force of friction available at the point of contact between the ladder and the floor?

The monomer of neoprene is

The mean of four observations is $3$. If the sum of the squares of these observations is $48$,then their standard deviation is

$\frac{d}{d x} \sin ^{-1}\left(3 x-4 x^3\right)$ is equal to