« previous next »

Author Question: A pattern of bright lines on a dark background is referred to as A) an emission line spectrum B) ... (Read 52 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?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

A king cheetah showing its distinctive coat pattern A king cheetah showing its distinctive coat pattern
Imaginary Thoracic Lines, Anterior View Imaginary Thoracic Lines, Anterior View
Spectrum of Hydrogen Gas Spectrum of Hydrogen Gas
Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap
Finding the equation of a line Finding the equation of a line
Find the curved line Find the curved line
Video: Endocytosis - pinocytosis, receptor mediated and Transcytosis

For a complete list of videos, visit our video library