Question

The model of a propeller, 3 m in diameter, cruising
at 10 m/s in air, is tested in a wind tunnel on a 1:10
scale model. If a thrust of 50 N is measured on the
model at 5 m/s wind speed, then the thrust on the
prototype will be
(a) 20,000 N
(6) 2,000 N
(c) 500 N
(d) 200 N.
​

Answer 1

Answer:

i can't understand sorry