« previous next »

Author Question: A possible means for making an airplane radar-invisible is to coat the plane with an antireflective ... (Read 66 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
on: Jul 28, 2018
A possible means for making an airplane radar-invisible is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.84 cm, and the index of refraction of the polymer is n = 1.6, how thick would the coating be if a 180 phase change occurs at both surfaces?
 a. 24 mm
  c. 32 mm
  b. 7.5 mm
  d. 6.0 mm

Question 2

A puddle of water (n = 1.33) is covered with a very thin layer of oil (n = 1.20). How thick is the oil in the region that strongly reflects light with a wavelength of 497 nm?
 a. 207 nm
  c. 458 nm
  b. 550 nm
  d. 229 nm


sabina576

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Deast7027

  • Hero Member
  • *****
  • Posts: 538
Reply #2 on: Jul 28, 2018
TY


sabina576

  • Sr. Member
  • ****
  • Posts: 356
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Reindeer fur coat Reindeer fur coat
Recessive epistasis due to the yellow coat mutation Recessive epistasis due to the yellow coat mutation
This graphic illustrates the original systems model of politics advanced by David Easton. Politics This graphic illustrates the original systems model of politics advanced by David Easton. Politics
Eating Breakfast Means More Energy and Fewer Calories throughout the Day Eating Breakfast Means More Energy and Fewer Calories throughout the Day
The Making of a Protein The Making of a Protein
Cartesian Plane (Mathematics) Cartesian Plane (Mathematics)
Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

For a complete list of videos, visit our video library