Global positioning satellites (gps) can be used to determine positions w/great accuracy . the system works by determining the distance between the observer and each of several satellites orbiting earth . if one of the satellite is at a distance of 2 km from you . what percent accuracy in the distance is required if we desire a 2 meter uncertainty ? how many significant figures do we need to have in the distance ?

uncertainity = 0.0000001%

the no of significant figures need to have is eight

Explanation:

given data:

satellite distance from earth = 20000 k  = 20,000,000 m

we know that percntage of uncertainity of 2m can be calculated as

uncertainity = 0.0000001%

the range of satellite from your location from km to m is

(20,000,000m -2m) to (20,000,000m + 2m)  = 19999998 m  +20,000,002 m)

the no of significant figures need to have is eight

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.

not too sure thinking all accelerations are pointed down