This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A light ray enters a glass enclosed fishtank. From air it enters the glass at 20. with respect to ... (Read 23 times)

abern

  • Hero Member
  • *****
  • Posts: 533
on: Jul 27, 2018
A light ray enters a glass enclosed fishtank. From air it enters the glass at 20. with respect to the surface, then emerges into the water. The index for glass is 1.50 and for water 1.33.
 
  (a) What is the angle of refraction in the glass?
  (b) What is the angle of refraction in the water?
  (c) Is there any incident angle in air for which the ray will not enter the water due to total internal reflection?

Question 2

Approximately what proportion of people in the United States believe we have been visited by extraterrestrials?
 
  A) around 33 or a third
  B) about 50 or a half
  C) less than 1
  D) more than 90


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

CourtneyCNorton

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 39.
(b) 45.
(c) no

Answer to Question 2

A


abern

  • Member
  • Posts: 533
Reply 2 on: Jul 27, 2018
Wow, this really help

amynguyen1221

  • Member
  • Posts: 355
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Light Waves in the Electromagnetic Spectrum Light Waves in the Electromagnetic Spectrum
Chris Burden, Urban Light. Chris Burden, Urban Light.
Predators adapt to extreme water pressure and the absence of light Predators adapt to extreme water pressure and the absence of light
Is this glass half empty or half full? Is this glass half empty or half full?
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
Light-independent reactions in C3 plants. Light-independent reactions in C3 plants.
Video: Muscle Fatigue and Recovery

For a complete list of videos, visit our video library