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

Author Question: The SI unit of length, the meter, is currently defined A) as 10-7 of the distance from the North ... (Read 77 times)

littleanan

  • Hero Member
  • *****
  • Posts: 575
on: Jul 27, 2018
The SI unit of length, the meter, is currently defined
 
  A) as 10-7 of the distance from the North Pole to the equator along a meridian running through Paris.
  B) as the length of the path traveled by light in a vacuum during 1/299792485 s.
  C) by the President's foot.
  D) as the distance between two marks on a metal bar make of a platinum-iridium alloy kept at the National Bureau of Standards.
  E) 1,553,164.1 wavelengths of red cadmium light in dry air at 25C.

Question 2

What is the primary topic of study in quantum mechanics?
 
  A) the role played by atoms in astronomy
  B) subatomic particles and the forces with which they interact
  C) the mechanical movements of the heavens
  D) the role of relativity in astronomy


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hikerman221

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

B


littleanan

  • Member
  • Posts: 575
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

abro1885

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Resource partitioning among five species of warblers feeding in North American spruce trees. Resource partitioning among five species of warblers feeding in North American spruce trees.
A lilac, orange and white Satin Peruvian guinea pig (show-length coat) A lilac, orange and white Satin Peruvian guinea pig (show-length coat)
Coal Strip Mining in North Dakota Coal Strip Mining in North Dakota
Christian Gladu, The Bungalow Company, The Birch, North Town Woods, Bainbridge Christian Gladu, The Bungalow Company, The Birch, North Town Woods, Bainbridge
50-Unit Insulin Syringe 50-Unit Insulin Syringe
What is the length of the staircase? What is the length of the staircase?
Video: Hormonal feedback loop components

For a complete list of videos, visit our video library