Comic-strip Superhero meets an asteroid in outer space and hurls it at 800 m/s, as fast as a speeding bullet. The asteroid is a thousand times more massive than Superhero. In the strip, Superhero is seen at rest after the throw. Taking physics into account, what would be the speed of his recoil?

0.8 m/s

Explanation: by using the law of conservation of linear momentum, the momentum of the super hero equals that of the asteroid.

Let m = mass of super hero , the mass of asteroid is 1000 times that of the super hero, hence mass of asteroid = 1000m

Speed of super hero = 800 m/s

Speed of asteroid = recoil speed of super hero = ?

m × 800 = 1000m × v

m cancels out on both sides, hence we have that

800 = 1000v

v = 800 / 1000 = 0.8 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.

d. platinum would have the greatest temperature increase because it has the lowest specific heat.