This topic contains a solution. Click here to go to the answer

Author Question: A fused combination of a diverging and converging lens pair, each made from a different index of ... (Read 146 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
A fused combination of a diverging and converging lens pair, each made from a different index of refraction glass, is used to reduce the occurrence of which of the following effects?
 a. mirages
  c. chromatic aberration
  b. light scattering
  d. spherical aberration

Question 2

The mass of a hot-air balloon and its cargo (not including the air inside) is 250 kg. The air outside is at a temperature of 10C and a pressure of 1 atm = 105 N/m2 . The volume of the balloon is 400 m3 . Which temperature below of the air in the balloon will allow the balloon to just lift off? (Air density at 10C is 1.25 kg/m3.)
 a. 37C
  c. 99C
  b. 293C
  d. 200C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sierray

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

C

Answer to Question 2

B



magmichele12

  • Hero Member
  • *****
  • Posts: 559
Both answers were spot on, thank you once again



Sierray

  • Sr. Member
  • ****
  • Posts: 343

 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

For a complete list of videos, visit our video library