The points with position vectors $60i + 3j$,$40i - 8j$,and $ai - 52j$ are collinear if $a = \dots$

$A$ gaseous mixture consists of $16 \, g$ of helium and $16 \, g$ of oxygen. The ratio $(C_p / C_v)$ of the mixture is

The distance between the parallel lines given by $(x+7y)^2 + 4\sqrt{2}(x+7y) - 42 = 0$ is

Which of the following statements is not correct when a junction diode is in forward bias?

Which of the following is an example of a ketohexose?

For the $RC$ circuit shown,the resistance is $R = 10.0 \ \Omega$,the capacitance is $C = 5.0 \ \mu F$ and the battery has voltage $\xi = 12 \ V$. The capacitor is initially uncharged when the switch $S$ is closed at time $t = 0$. At some time later,the current in the circuit is $0.50 \ A$. What is the magnitude of the charge across the capacitor at that moment in $\mu C$?