$A$ fall in glomerular filtration rate $(GFR)$ activates

In any $\triangle ABC$,the expression $\frac{(a+b+c)(b+c-a)(c+a-b)(a+b-c)}{4b^2c^2}$ is equal to:

$A$ metallic frame moves with constant velocity $v$ near an infinitely long current-carrying wire. At any instant,the induced electromotive forces (emf) in sides $AD$ and $BC$ are $5\,V$ and $2\,V$ respectively. If the resistance of the frame is $6\,\Omega$,find the magnitude and direction of the induced current in it.

The concentration of an organic compound in chloroform is $6.15 \ g$ per $100 \ mL$ of solution. $A$ portion of this solution in a $5 \ cm$ polarimeter tube causes an observed rotation of $-1.2^{\circ}$. What is the specific rotation of the compound?

The freezing point depression of a $0.001 \ m$ aqueous solution of $[Pt(NH_3)_4 Cl_4]$ is $0.0054^{\circ} C$. If $K_f$ for water is $1.80 \ K \ kg \ mol^{-1}$,determine the correct formula of the complex.

The major product of the following reaction is