« previous next »

Author Question: A possible means for making an airplane radar-invisible is to coat the plane with an antireflective ... (Read 61 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?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr (a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
The planes of the body. The sagittal plane is vertical from front to back, the frontal plane is vert The planes of the body. The sagittal plane is vertical from front to back, the frontal plane is vert
Having a time zone map located near the telephone will assist you when making long distance calls ou Having a time zone map located near the telephone will assist you when making long distance calls ou
An embedded particle of something was found on one of the gears, making this pump worthless except ... An embedded particle of something was found on one of the gears, making this pump worthless except ...
Accounting (Making Entries) Accounting (Making Entries)
Doppler Radar Doppler Radar
Video: Normal and abnormal blood pH

For a complete list of videos, visit our video library