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 small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

conservation of mass

mass before something happens = mass afterwards