Key points:
Friction does not oppose the motion, but it opposes relative movement between the contact surfaces.
When there is no relative motion between the contact surfaces, then no friction force...
As Corona is spreading in the almost entire world, the situation of parents/ families is very critical as such cases keep them worrying about their children and other family members.
For Parents, this...
Rotational spectroscopy is concerned with the measurement of the energies of transitions between quantized rotational states of molecules in the gas phase.
The rotational energy levels, F(J), of the...