Physics, 27.06.2019 06:40 steven123pink
Radar consists of electromagnetic waves. a warplane is rendered invisible to enemy radar by applying an antireflective polymer coating. if radar waves have a frequency of 10 ghz (giga = 1e9), and the index of refraction of the polymer for these waves is 1.50, what is the minimum thickness of the antireflective coating? (c = 3e8 m/s. the index of refraction of air is ~1, and that of the fuselage is larger than for the polymer coating)
Answers: 3
Physics, 22.06.2019 02:00
What is created when solids,liquids,an gases mix with one another
Answers: 1
Physics, 22.06.2019 02:30
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
Answers: 1
Physics, 22.06.2019 05:30
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 07:40
An object's buoyant force and weight mean the same thing.a. trueb. false
Answers: 2
Radar consists of electromagnetic waves. a warplane is rendered invisible to enemy radar by applying...
History, 06.11.2020 18:50
English, 06.11.2020 18:50
Social Studies, 06.11.2020 18:50
Mathematics, 06.11.2020 18:50
Advanced Placement (AP), 06.11.2020 18:50
Mathematics, 06.11.2020 18:50
Advanced Placement (AP), 06.11.2020 18:50
English, 06.11.2020 18:50
Mathematics, 06.11.2020 18:50
Social Studies, 06.11.2020 18:50
English, 06.11.2020 18:50
Health, 06.11.2020 18:50