Q1 : A transverse wave produced on spring has a frequency of 190Hz and travels along the length of the spring of 90m, in 0.5sec. aWhat is the period of the wave? b What is the speed of the wave? c What is wavelength of the wave?

hope this is right,............

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.

there are no contact forces mentioned on the list of choices that you've provided.