You pull with a force of 77 n on a piece of luggage of mass 23 kg, but it does
not move. if the coefficient of friction between the luggage and the floor is
0.8, what is the force of static friction acting on the luggage?

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.

the higher the current the higher the mag field around it the higher the influence on the compass

it's a b and

god i hope this !