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 78 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
:D TYSM

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

practice image - mink anatomy lab - head and neck practice image - mink anatomy lab - head and neck
Trans-fat in Peanut Butter (Front) Trans-fat in Peanut Butter (Front)
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
This battery shows a large “1000” on the front panel but this is the CA rating and not the ... This battery shows a large “1000” on the front panel but this is the CA rating and not the ...
Image Image
The allowable compressive bearing capacity of a soil is 8000 psf. What should be the length of ... The allowable compressive bearing capacity of a soil is 8000 psf. What should be the length of ...
Video: Methods that regulate pH

For a complete list of videos, visit our video library