A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.00 cm and the index of refraction of the polymer is n = 1.50, how thick would you make the coating?

Explanation:

From the question we are told that:

Wavelength m

Refraction Index

Generally the equation for Destructive interference for Normal incidence is mathematically given by

Since  Minimum Thickness occurs at

At

Therefore

when earth is in rotational motion around the sun,it displaces from its place.

when a ball is placed on an inclined surface it does both the rotational and circular motion.

explanation: