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

Author Question: A pure sample of 226Ra contains 2.0 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 103 ... (Read 232 times)

LaDunn

  • Hero Member
  • *****
  • Posts: 526
on: Jul 28, 2018
A pure sample of 226Ra contains 2.0  1014 atoms of the isotope. If the half-life of 226Ra = 1.6  103 years, what is the decay rate of this sample? (1 Ci = 3.7  1010 decays/s)

Question 2

How much kinetic energy must a deuterium ion (charge 1.6  10-19 C) have to approach to within 10-14 m of another deuterium ion? (1 MeV = 1.6  10-13 J)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emsimon14

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

7.4  10-8 Ci

Answer to Question 2

140 keV


LaDunn

  • Hero Member
  • *****
  • Posts: 526
Reply #2 on: Jul 28, 2018
TY


emsimon14

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

A rich diversity of life lives in and among coral reefs. A rich diversity of life lives in and among coral reefs.
Socrates thrived on the intellectual life of the agora (the marketplace), where he could be sure to ... Socrates thrived on the intellectual life of the agora (the marketplace), where he could be sure to ...
Sample Exercise Program for Healthy Older Adults Sample Exercise Program for Healthy Older Adults
Sample prescriptions of antibiotics for dental infections. Sample prescriptions of antibiotics for dental infections.
Live is Life - Opus Live is Life - Opus
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ... Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...
Video: Carbohydrate digestion - mouth and stomach & pancreas and small intestine

For a complete list of videos, visit our video library