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

Author Question: What do we mean by the half-life of a radioactive isotope? A) it is the amount of time a person ... (Read 43 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jul 27, 2018
What do we mean by the half-life of a radioactive isotope?
 
  A) it is the amount of time a person can be exposed to radiation without getting sick
  B) it is the time for half the number of radioactive nuclei to become stable nuclei
  C) it is the amount of time for half of the nuclei to become radioactive
  D) it is the time for half the number of radioactive nuclei to decay

Question 2

A handball of mass 0.10 kg, traveling horizontally at 25. m/s, strikes a wall and rebounds at 19. m/s. What is the change in the momentum of the ball?
 
  A) 4.4 N-s
  B) 72 N-s
  C) 1.2 N-s
  D) 1.8 N-s
  E) 5.4 N-s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bookworm410

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


jace

  • Member
  • Posts: 541
Reply 2 on: Jul 27, 2018
:D TYSM

ebonylittles

  • Member
  • Posts: 318
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Cell division in common life cycles Cell division in common life cycles
Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ... Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...
An IAC controls idle speed by controlling the amount of air that passes around the throttle plate. ... An IAC controls idle speed by controlling the amount of air that passes around the throttle plate. ...
The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ... The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ...
I Am The Bread of Life Suzanne Toolan with Lyrics Catholic Hymn Song Sunday 7pm Choir I Am The Bread of Life Suzanne Toolan with Lyrics Catholic Hymn Song Sunday 7pm Choir
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g? What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g?
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

For a complete list of videos, visit our video library