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

Author Question: If originally there were X atoms of radioactive isotope present and now there are only X/16 atoms, ... (Read 203 times)

Pea0909berry

  • Hero Member
  • *****
  • Posts: 573
on: Jul 27, 2018
If originally there were X atoms of radioactive isotope present and now there are only X/16 atoms, how many half-lives have elapsed?
 
  A) 4
  B) 1
  C) 2
  D) 3

Question 2

Describe the differences between secular and diffuse reflection.
 
  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

BAOCHAU2803

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

Specular reflection occurs when the reflecting surface is smooth and flat. The reflected rays from parallel incident rays are also parallel. Diffuse reflection occurs when the reflecting surface is rough. The reflected rays from parallel incident rays are not parallel because of the irregular nature of the surface.


Pea0909berry

  • Hero Member
  • *****
  • Posts: 573
Reply #2 on: Jul 27, 2018
Thanks


BAOCHAU2803

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

High rates of rural poverty have been a part of the United States from its origin to the present. ... High rates of rural poverty have been a part of the United States from its origin to the present. ...
How to calculate present value (Question 3) How to calculate present value (Question 3)
How to calculate present value (Question 4) How to calculate present value (Question 4)
How many atoms are in 3.00 moles of NA How many atoms are in 3.00 moles of NA
In situ hybridization between a radioactive probe In situ hybridization between a radioactive probe
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: Biological organic compounds

For a complete list of videos, visit our video library