Find the correct stability order for the following carbocations:

$A$ metallic wire with tension $T$ and at temperature $30^{\circ} C$ vibrates with its fundamental frequency of $1 \ kHz$. The same wire with the same tension but at $10^{\circ} C$ temperature vibrates with a fundamental frequency of $1.001 \ kHz$. The coefficient of linear expansion of the wire is

An electromagnetic wave with frequency $\omega$ and wavelength $\lambda$ travels in the $+y$ direction. Its magnetic field is along the $+x$ axis. The vector equation for the associated electric field (of amplitude $E_0$) is:

Let $C$ be a curve given by $y(x) = 1 + \sqrt{4x - 3}$,$x > \frac{3}{4}$. If $P$ is a point on $C$ such that the tangent at $P$ has slope $\frac{2}{3}$,then a point through which the normal at $P$ passes is:

Chromatophores take part in

The minimum value of $|z-1|+|z-5|$ is