« previous next »

Author Question: The half-life of a radioactive element is the time it takes for: A) half of the radioactive atoms ... (Read 125 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
on: Jul 27, 2018
The half-life of a radioactive element is the time it takes for:
 
  A) half of the radioactive atoms to double themselves.
  B) half of the radioactive atoms to decay into isotopes.
  C) the radioactive atoms to increase by half of its initial quantity.
  D) the radioactive atoms to increase to 1.5 times of its initial quantity.

Question 2

Which of the following is true of meteors?
 
  A) They are not stars.
  B) They orbit Terrestrial planets.
  C) They are composed of frozen water.
  D) They do not contain rock or metal.


TINA

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

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

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?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Element Cube Element Cube
The gender roles that we learn during childhood become part of our basic orientations to life. ... The gender roles that we learn during childhood become part of our basic orientations to life. ...
jellyfish life cycle jellyfish life cycle
Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period
Environmental Systems in Space and Time Environmental Systems in Space and Time
Food, friends, and football . . . a way of life Food, friends, and football . . . a way of life
Video: Eczema

For a complete list of videos, visit our video library