Author Question: A projector lens is needed to form an image on a screen 20 times the size of its corresponding ... (Read 31 times)

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
A projector lens is needed to form an image on a screen 20 times the size of its corresponding object. The screen is located 8.0 m from the lens. What is the required focal length of the lens?
 a. 0.32 m
  c. 0.73 m
  b. 0.38 m
  d. 1.25 m

Question 2

An ideal gas is confined to a container with adjustable volume. The number of moles and temperature are constant. By what factor will the volume change if pressure quadruples?
 a. 16
  c. 1/4
  b. 4
  d. 1/16



ms_sulzle

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

B

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
Both answers were spot on, thank you once again



ms_sulzle

  • Sr. Member
  • ****
  • Posts: 320

 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

For a complete list of videos, visit our video library