Add temperature close to 0K, the specific heat capacity c of a particular solid is given by c=bT³, where T is the thermodynamic temp and b is a const. characteristic of the solid. The SI unit of specific heat capacity is J kg-¹ K-¹
What is the unit of constant b, expressed in SI base units?
A. m²s-²K-³
B. m²s-²K-⁴
C. kg m²s-²K-³
D. kgm²s-²K-⁴

ans is B , I need an explanation
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The object's initial distance above the groundthe object's initial velocity

  bv hb ouj bv gv gtrxr

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.