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

Author Question: The focal length of the lens of a simple camera is 40.0 mm. How far must the lens be moved to change ... (Read 102 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
on: Jul 29, 2018
The focal length of the lens of a simple camera is 40.0 mm. How far must the lens be moved to change the focus of the camera from a person 25 m away to one that is 4.0 m away?
 
  A) 0.2 mm
  B) 0.3 mm
  C) 0.4 mm
  D) 0.5 mm
  E) 0.7 mm

Question 2

When Niels Bohr was knighted for his contributions to physics, he chose for his coat of arms
 
  A) a model of the planetary atom.
  B) a rendition of an energy-level diagram.
  C) the yin-yang symbol of Eastern culture.
  D) none of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

Answer: C


jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
Reply #2 on: Jul 29, 2018
Thanks


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Relatively simple changes in Hox genes control limb formation in tetrapods. Relatively simple changes in Hox genes control limb formation in tetrapods.
During World War I, advancing armies unloosed ferocious artillery barrages to destroy deeply entrenc During World War I, advancing armies unloosed ferocious artillery barrages to destroy deeply entrenc
Seriation features operations of comparing the length of each stick to the other sticks and putting ... Seriation features operations of comparing the length of each stick to the other sticks and putting ...
Recent Climate Change Recent Climate Change
Climate Change: Timescale decades to centuries Climate Change: Timescale decades to centuries
Barenboim's study show the change in children's descriptions of their peers Barenboim's study show the change in children's descriptions of their peers
Video: Interview with Person who has Schizophrenia

For a complete list of videos, visit our video library