« previous next »

Author Question: A pattern of bright lines on a dark background is referred to as A) an emission line spectrum B) ... (Read 83 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jul 27, 2018
A pattern of bright lines on a dark background is referred to as
 
  A) an emission line spectrum
  B) an absorption line spectrum
  C) a continuous spectrum
  D) a bright spectrum

Question 2

The SI unit of time, the second, is currently defined by
 
  A) the motion of the Earth in orbit.
  B) the rotation period of the Earth.
  C) a duration of an atomic clock.
  D) a standard clock at the International Bureau of Weights and Measures in France.
  E) the time required for light to travel 1/299,792,458 of a meter.


pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Direction of Pattern of Abdominal Percussion Direction of Pattern of Abdominal Percussion
The Absorption and Emission of an Hα Photon The Absorption and Emission of an Hα Photon
Operation of a typical pulse generator (pickup coil). At the bottom is a line drawing of a typical ... Operation of a typical pulse generator (pickup coil). At the bottom is a line drawing of a typical ...
Press along sen lines and marma points on inner forearm. Press along sen lines and marma points on inner forearm.
Industrial and transport sources are responsible for a large proportion of global GHG emission Industrial and transport sources are responsible for a large proportion of global GHG emission
Number line for rounding Number line for rounding
Video: Glycolysis Animation

For a complete list of videos, visit our video library