Answer to Question #260057 in Molecular Physics | Thermodynamics for beza

Question

Estimate the number of impacts that air molecules make with the palm of your hand each second, assuming that all air consists entirely of nitrogen (molar mass=0.028kg)?

Answer 1

Force= pressure$\times$ area

Force = number of hits mass change $\times$ velocity Change

Number of hits =$\frac{air pressure\times A}{m}$

Number of hits =$\frac{1 atm \times A}{0.028}$