A wave has a Wavelength of 3 meters and a Frequency of 15Hz. What is its velocity?

Velocity of the wave is 45 m/s

Explanation:

Frequency is given by the following equation

f = v/λ, where f is the frequency, v is the velocity of wave and λ is the wavelength.

v = f × λ

⇒ v = 15 × 3 = 45 m/s

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.