Which of the following represents the complexity of cellular organization?

When a wave travels in a medium,the particle displacement is given by: $y = a \sin 2\pi (bt - cx)$,where $a, b$,and $c$ are constants. The maximum particle velocity will be twice the wave velocity if

Rectified spirit is a mixture of

The number of divisors of $n = 38808$ (excluding $1$ and $n$) is

The eccentricity of the ellipse $\frac{x^2}{16} + \frac{y^2}{9} = 1$ is

An electromagnetic wave of intensity $1400 ~W/m^2$ falls on a metal surface of area $1.5 ~m^2$ and is completely absorbed by it. Find the force exerted by the beam.