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

Author Question: For a converging lens with two convex surfaces, the radius of curvature for both surfaces is 20 cm. ... (Read 137 times)

michelleunicorn

  • Hero Member
  • *****
  • Posts: 565
on: Jul 28, 2018
For a converging lens with two convex surfaces, the radius of curvature for both surfaces is 20 cm. If the focal length is 10 cm, what must the index of refraction be?
 a. 1.5
  c. 2.0
  b. 2.5
  d. 3.0

Question 2

How many atoms are present in a sample of pure iron with a mass of 210 g? (The atomic mass of iron = 56 u and NA = 6.02  1023.)
 a. 1.8  1019
  c. 2.3  1024
  b. 2.3  1028
  d. 3.2  1028


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


michelleunicorn

  • Member
  • Posts: 565
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Hyperopia (farsightedness). In the uncorrected top figure, the image would come into focus behind th Hyperopia (farsightedness). In the uncorrected top figure, the image would come into focus behind th
Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the
The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ... The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ...
Erosion of palatal surfaces of maxillary teeth due to chronic vomiting. Erosion of palatal surfaces of maxillary teeth due to chronic vomiting.
A spherical water tank with an inner radius of 4 m has its lowest point 3 m ... A spherical water tank with an inner radius of 4 m has its lowest point 3 m ...
Respiratory surfaces of aquatic invertebrates. Respiratory surfaces of aquatic invertebrates.
Video: Introduction to Cystic Fibrosis

For a complete list of videos, visit our video library