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

Author Question: A coin is 12 cm in front of a convex lens with focal length of magnitude 4.0 cm. Where is the image? ... (Read 101 times)

Awilson837

  • Hero Member
  • *****
  • Posts: 509
on: Jul 29, 2018
A coin is 12 cm in front of a convex lens with focal length of magnitude 4.0 cm. Where is the image?
 
  A) 8.0 cm behind the lens
  B) 6.0 cm in front of the lens
  C) 6.0 cm behind the lens
  D) 4.0 cm in front of the lens

Question 2

A small gas laser of the type used in classrooms may radiate light at a power level of 2.0 mW.
 
  If the wavelength of the laser light is 642 nm, how many photons does it emit per second? (c = 3.0  108 m/s, h = 6.626  10-34 J  s)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

6.5  1015


Awilson837

  • Member
  • Posts: 509
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

The Moon passing in front of the Sun, from the STEREO-B spacecraft. The Moon passing in front of the Sun, from the STEREO-B spacecraft.
Extended Objects Create a Focal Plane Extended Objects Create a Focal Plane
Measuring the Weight and Length of an Infant Measuring the Weight and Length of an Infant
Finish the entire session with brushing over front of the body. Apply brushing movements with ... Finish the entire session with brushing over front of the body. Apply brushing movements with ...
An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ... An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ...
HELP WITH IMAGE PLEASE HELP WITH IMAGE PLEASE
Video: Blood Pressure Measurement

For a complete list of videos, visit our video library