On 16 Oct, 18:29, Thomas wrote:
If you assume that each molecule has a weight of
4.5*10^-26 kg, this means that the force on the plate is 2.5*10^27
*4.5*10^-26 *250 = 5.6*10^4 N = 12,600 lb. Of course, the wing

I forgot actually to write an additional factor 2 here which I added
because in an elastic collision with the plate, the momentum change is
twice the momentum of the molecule. So it should read:
"the force on the plate is 2*2.5*10^27 *4.5*10^-26 *250 = 5.6*10^4 N =
12,600 lb.

Thomas