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 40 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
:D TYSM

samiel-sayed

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Major Findings of the High Scope Preschool Study High Scope participants showed better academic per Major Findings of the High Scope Preschool Study High Scope participants showed better academic per
Sample prescriptions of drugs for oral fungal infections. Sample prescriptions of drugs for oral fungal infections.
Simplified view of retrovirus life cycle Simplified view of retrovirus life cycle
A. Clara Peeters Still Life with Fruit and Flowers A. Clara Peeters Still Life with Fruit and Flowers
A box contains red, yellow and green marbles. Half of the marbles are red, 1/8 of the remaining ... A box contains red, yellow and green marbles. Half of the marbles are red, 1/8 of the remaining ...
Life in sulfur-rich, anoxic sediments Life in sulfur-rich, anoxic sediments
Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

For a complete list of videos, visit our video library