$A$ parachutist after bailing out falls $50\, m$ without friction. When the parachute opens,it decelerates at $2\, m/s^2$. He reaches the ground with a speed of $3\, m/s$. At what height did he bail out?

One end of a uniform glass capillary tube of radius $r=0.025 \ cm$ is immersed vertically in water to a depth $h=1 \ cm$. The excess pressure in $N/m^2$ required to blow an air bubble out of the tube is: (Surface tension of water $T=7 \times 10^{-2} \ N/m$,Density of water $\rho=10^3 \ kg/m^3$,Acceleration due to gravity $g=10 \ m/s^2$)

$e^{\log (\cosh^{-1} 2)}$ is equal to :

They do not perform photosynthesis and primarily obtain nutrition through ingestion.

The $IUPAC$ name for the complex $[Co(NO_2)(NH_3)_5]Cl_2$ is:

Which one of the following is a slime mould?