The solution set of the equation $x^{\log_x(1-x)^2} = 9$ is

If there were no gravity,which of the following will not be there for a fluid?

If $\theta$ is the angle between the tangents from $(-1,0)$ to the circle $x^2+y^2-5x+4y-2=0$,then $\theta$ is equal to

The following figure shows a logic gate circuit with two inputs $A$ and $B$ and an output $C$. The voltage waveforms of $A$,$B$,and $C$ are as shown in the figure. The logic gate is:

Three waves of equal frequency having amplitudes $10\,\mu m$,$4\,\mu m$,and $7\,\mu m$ arrive at a given point with a successive phase difference of $\pi / 2$. The amplitude of the resulting wave in $\mu m$ is:

$A$ light string passing over a smooth light pulley connects two blocks of masses $m_1$ and $m_2$ (vertically). If the acceleration of the system is $\frac{g}{8}$,then the ratio of the masses is