$a^{m \log_a n} = $

Manganese inhibits calcium translocation in........

Which of the following is not an 'antibiotic'?

How do ortho and para hydrogen differ from each other?

$A$ plane passing through $(-1, 2, 3)$ and whose normal makes equal angles with the coordinate axes is

Two blocks are connected by a spring. The combination is suspended,at rest,from a string attached to the ceiling,as shown in the figure. The string breaks suddenly. Immediately after the string breaks,what is the initial downward acceleration of the upper block of mass $2\,m$?