A man pulls a crate of mass 8 kg which is on frictionless bearings up a ramp that is h = 5 m high and angled at 37°. The crate goes from rest at the bottom to rest at the top of the incline. (Hint: Remember the direction of force and displacement.) (a) How much work is done by the man?
(b) How much work is done by gravity?
(c) How much work is done by the normal force?

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.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.