If the refraction index of amber is 1.55, what is the speed of light through amber? (the speed of light through a vacuum is 3.00 x 108 m/s)

1.94 x 108 m/s

0 m/s

4.65 x 108 m/s

5.17 x 10-9 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.

c) up

hope this