1 L of ideal gas with r=1.3. Gas. molecules
m= 4.3 *10^-26kg
Goes
adiabotic compression.
under goes
from
initial state i to finalf
final volume Vf=vi/2
Ti = 273k Pi= I atm = 1.013* 10^5 pa
Find
1) final pressure Pf in atm
2)
finail temperature
3)
initial root mean-square speed
molecules
4) final average speed of molecules

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 speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.