Where does the process of cleavage begin in humans?

In the circuit,if the forward voltage drop for the diode is $0.5\, V$,the current will be.......$mA$.

If $\vec{P} \cdot \vec{Q} = PQ$,then the angle between $\vec{P}$ and $\vec{Q}$ is ............. $^\circ$.

What is the $IUPAC$ name of the following compound?

If $f: R \rightarrow R$ is defined by $f(x) = \begin{cases} \frac{x+2}{x^2+3x+2} & \text{if } x \in R-\{-1,-2\} \\ -1 & \text{if } x=-2 \\ 0 & \text{if } x=-1 \end{cases}$,then $f$ is continuous on the set

Two capacitors $C_1$ and $C_2$ are charged to $120\, V$ and $200\, V$ respectively. It is found that by connecting them together,the potential on each one can be made zero. Then: