What is the length of a simple pendulum with a period of 11.5 s?

The length of a simple pendulum with period 11.5 s = 32.86 m

Given data :

period ( T ) = 11.5 secs

acceleration due to gravity ( g ) = 9.8 m/s²

we will apply the formula below

Therefore L  =  

                      = ( 11.5 )² * 9.8 /  4 * (3.14)²

                      = 132.25 * 9.8 /  ( 39.4384 )

                      = 32.86 m

Hence the length of a simple pendulum with period 11.5 s = 32.86 m

Learen more about simple pendulum : link

less than one you can't create energy

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.