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

Author Question: Fermium-253 has a half-life of 3.00 d. A sample of fermium contains 7.37 107 nuclei. How long will ... (Read 62 times)

SAVANNAHHOOPER23

  • Hero Member
  • *****
  • Posts: 542
on: Jul 29, 2018
Fermium-253 has a half-life of 3.00 d. A sample of fermium contains 7.37  107 nuclei. How long will it take for there to be only 3.36  106 fermium nuclei in this sample?
 
  A) 2.75 d
  B) 9.80 d
  C) 13.4 d
  D) 15.7 d
  E) 58.6 d

Question 2

A person's hyperopic (farsighted) eye can focus on objects that are 75 cm away and farther. What power and what focal length contact lenses should be prescribed so this person can see objects 25 cm and farther from the eye?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akpaschal

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

2.7 diopters, 38 cm


SAVANNAHHOOPER23

  • Member
  • Posts: 542
Reply 2 on: Jul 29, 2018
Excellent

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

The Many Faces of Life The Many Faces of Life
The Many Faces of Life (Part 2) The Many Faces of Life (Part 2)
A typical spectrum with peaks representing the peptide fragments generated from a sample A typical spectrum with peaks representing the peptide fragments generated from a sample
Associative Long-Term Potentiation Associative Long-Term Potentiation
A sample of baking soda is heated and releases carbon dioxide gas into a 1000-mL A sample of baking soda is heated and releases carbon dioxide gas into a 1000-mL
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library