Which mineral element is present in the structure of the amino acids cysteine and methionine?

$\int_{0}^{2\pi} (\sin x + |\sin x|) \, dx = $

$A$ motor of power $P_0$ is used to deliver water at a certain rate through a given horizontal pipe. To increase the rate of flow of water through the same pipe $n$ times,the power of the motor is increased to $P_1$. The ratio of $P_1$ to $P_0$ is

If $(2,-1,3)$ is the foot of the perpendicular drawn from the origin to the plane, then the equation of the plane is

Which of the following is a redox reaction?

Identify the reaction for which $\Delta H \neq \Delta E$ :