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

Author Question: How many photons per second emerge from a laser of power 2.00 mW with wavelength 605 nm? (c = 3.00 ... (Read 27 times)

maychende

  • Hero Member
  • *****
  • Posts: 556
on: Jul 29, 2018
How many photons per second emerge from a laser of power 2.00 mW with wavelength 605 nm? (c = 3.00  108 m/s, h = 6.626  10-34 J  s)
 
  A) 6.09  1015 photons/s
  B) 5.03  1012 photons/s
  C) 3.07  1015 photons/s
  D) 3.07  1013 photons/s

Question 2

The focal length of the lens of a simple digital camera is 40 mm, and it is originally focused on a person 25 m away. In what direction must the lens be moved to change the focus of the camera to a person 4.0 m away?
 
  A) It does not make any difference.
  B) sideways from the CCD sensors
  C) away from the CCD sensors
  D) towards the CCD sensors
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

AmberC1996

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 55% of students answer this correctly


maychende

  • Member
  • Posts: 556
Reply 2 on: Jul 29, 2018
:D TYSM

AISCAMPING

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

LASIK surgery uses a laser to reshape the cornea. LASIK surgery uses a laser to reshape the cornea.
Power in the United States: The Model Proposed by C. Wright Mills Power in the United States: The Model Proposed by C. Wright Mills
Tidal and wave power Tidal and wave power
What is the longest wavelength of light that can cause photoelectron emission fr What is the longest wavelength of light that can cause photoelectron emission fr
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 ...
Pulse Laser Pulse Laser
Video: Heart sounds

For a complete list of videos, visit our video library