Class 11th

Com (Conservation of Momentum)

Pi = Pf

$\Rightarrow m{u}_1+5m{u}_2=m{v}_1+5m{v}_2$

$\Rightarrow m{u}_1=m{v}_1+5m{v}_2$

${}_{}$ $\Rightarrow u_1+v_1+5v_2$  …….(i)

& $e=1=\frac{v_2-v_1}{U_1-U_2}=\frac{v_2-v_1}{u_1}$ $\frac{{}_{}{}_{}}{{}_{}{}_{}}\frac{{}_{}{}_{}}{{}_{}}$

${}_{}{}_{}{}_{}$  $\Rightarrow u_1=v_2-v_1$ …….(ii)

Equation (i) + (ii)

$k.E_T=\frac{5}{9}{\left(K.E\right)}_i=55.6\mathrm{\%}$

The law of gravitation holds good for any pair of bodies in the universe.

This is correct statement.

The weight of any person becomes zero when the person is at the centre of the Earth.

Weight = mg

= m * 0 [g = 0 at the centre of the Earth]

= 0

$\mathrm{}{V}_{rms}>V_{av}>V_{mp}$

To keep,   $\Delta {\alpha }_{cm}=0$

      $M_1\Delta x_1+M_2\Delta X_2=0$          

$\Rightarrow 10*6+30\Delta X_2=0$      

$\Delta X_2=\frac{-10*6}{30}$

$\Delta X_2=-2cm$        

i.e. 2 cm towards the 10 kg block.

Assume both the block is moving with common acceleration 'a' then

$a=\frac{F}{m+M}.......(i)$

N = mg

N = 2g

$f=ma=\frac{mF}{m+M}$

For no slipping

$\Rightarrow \frac{2F}{10}\le g$

$F\le 5g$

$\begin{array}{l}F\le 5*9.8\\ F\le 49.0N\end{array}$

$\mathrm{C}\mathrm{l}>\mathrm{F}$   (exception)

$\mathrm{S}>$ Se (size effect)

$\mathrm{L}\mathrm{i}>\mathrm{N}\mathrm{a}$   (size effect)

Given, m = 0.6 $\pm$ $$ 0.006

$\Rightarrow p=\frac{m}{v}=\frac{m}{\pi r^2\mathcal{l}}$

$\frac{\Delta \rho }{\rho }*100=\frac{\Delta m}{m}*100+2\frac{\Delta r}{r}*100+\frac{\Delta \mathcal{l}}{\mathcal{l}}*100$

= 1 + 2 * 1 + 1

$\mathrm{}{\mathrm{N}}_2+{\mathrm{O}}_2?2\mathrm{N}\mathrm{O}$

Oxidation state changes

You can check the below given table for the comarative differences between valence bond theory and molecular orbital theory.

From the physics perspective, in uniform circular motion, speed and angular velocity are constant. That makes the angular acceleration and tangential acceleration are zero. Non-uniform motion, on the other hand, has varying speed and angular velocity, where angular acceleration is non-zero.