Two dolphins are swimming underwater in the same direction in the gulf of mexico. Dolphin A, swimming at Va = 5.0m/s, is ahead of Dolphin B, swimming at vg = 4.0m/s.. If Dolphin B makes a 2000 Hz call, what is the frequency heard by Dolphin A? (The speed of sound in seawater is 1530 m/s). a. f = f v - vA/v + vB.
b. f = f v - vA/v - vB.
c. f = f v + vA/v + vB.
d. f = f v + vA/v - vB.

b

Explanation:

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.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered