To a person who is inside a spaceship moving close to the speed of light, a meter stick held
horizontally inside the ship looks

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.

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000