Energy crisis cannot be solve immediately but it can be put up to the next generation give reason​

What object a collides with object b and bounces back its final momentum is?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same