What frequency is received by a standing person watching an oncoming ambulance moving at 30.0m/s and emitting a steady 950. Hz sound from its siren? The speed of sound on this day is 340. m/s. * ​

f=ma newton's second law 7x8=56n

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.

volts times amps 6 x 0.5 3w