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

Author Question: A ruby laser beam (l = 694.3 nm) is sent outwards from a 2.7-m diameter telescope to the moon, ... (Read 74 times)

D2AR0N

  • Hero Member
  • *****
  • Posts: 561
on: Jul 28, 2018
A ruby laser beam (l = 694.3 nm) is sent outwards from a 2.7-m diameter telescope to the moon, 384,000 km away. What is the radius of the big red spot on the moon?
 a. 500 m
  b. 250 m
  c. 120 m
  d. 1.0 km
  e. 2.7 km

Question 2

Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00 cm-wide slit. What is the total angular width (2q) of diffracted sound waves when the speed of sound in air is 340 m/sec.
 a. 167
  b. 83.6
  c. 19.5
  d. 41.8
  e. 0.11


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wuly

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


D2AR0N

  • Member
  • Posts: 561
Reply 2 on: Jul 28, 2018
:D TYSM

parshano

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

The Moon During the Day The Moon During the Day
Breathe Carolina & Shanahan ft. Haliene - Stars & Moon Breathe Carolina & Shanahan ft. Haliene - Stars & Moon
Neil Young - Harvest Moon Neil Young - Harvest Moon
How wide must a narrow slit be if the first diffraction minimum occurs at 12 with laser light ... How wide must a narrow slit be if the first diffraction minimum occurs at 12 with laser light ...
Newtonian Telescope. Newtonian Telescope.
Einstein telescope. Einstein telescope.
Video: Functional zones in a mitochondrion

For a complete list of videos, visit our video library