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 99 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

bigcheese9

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

THEMIS image of probable Mars cave entrances THEMIS image of probable Mars cave entrances
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
skull front skull 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 ...
Measuring leg length Measuring leg length
Determining Richter Scale Magnitude Determining Richter Scale Magnitude
Video: What is an ecosystem?

For a complete list of videos, visit our video library