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 33 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
Gracias!

essyface1

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport. The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
This moose exploits the twigs and buds of woody plants for the food it needs to survive a cold north This moose exploits the twigs and buds of woody plants for the food it needs to survive a cold north
Unit of blood. Unit of blood.
Using Parallax to Determine Distance Using Parallax to Determine Distance
How to evaluate angles using cosine, special triangles, the unit circle (Part 2) How to evaluate angles using cosine, special triangles, the unit circle (Part 2)
form unit form unit
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library