Answer:
EL SONIDO PUEDE VIAJAR POR CUALQUIER MEDIO MATERIAL, COMO
AIRE, NITRÓGENO, AGUA, TITANIO, ETC... ASÍ QUE EL
SONIDO VIAJA A TRAVÉS DE MOLÉCULAS.
Explanation:
I don't get what you're trying to say, I only see A. and B. so I will say the answer is possibly A.
Answer:
Explanation:
Given
Mass of solid uniform disk 
radius of disk 
mass of lump 
distance of lump from axis 
Moment of inertia is the distribution of mass from the axis of rotation
Initial moment of inertia of disk 

Final moment of inertia
=Moment of inertia of disk+moment of inertia of lump about axis




when a number of force acting on a body doesn't changes its motion it is called balanced force
Here are the ones that I know about
and can think of just now:
-- wind
-- solar
-- nuclear
-- tidal
-- hydro
-- geothermal
-- biomass