« previous next »

Author Question: A spectroscopic binary shows periodic variations in its a. radial velocity. b. proper motion. ... (Read 84 times)

jrubin

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
A spectroscopic binary shows periodic variations in its
 
  a. radial velocity.
  b. proper motion.
  c. brightness.
  d. mass.
  e. spectral type.

Question 2

What is the wavelength of light that has a frequency of 3 MHz?
 
  a. 9  1014 Hz
  b. 1  1014 m
  c. 9  1014 m
  d. 100 m
  e. 0.01 m


hugthug12

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery
Effect of substrate concentration on the initial velocity of an enzyme-catalyzed reaction Effect of substrate concentration on the initial velocity of an enzyme-catalyzed reaction
The perception of motion under four different conditions. The perception of motion under four different conditions.
Increased neurogenesis in the dentate gyrus following damage. The left panel shows (1) an ... Increased neurogenesis in the dentate gyrus following damage. The left panel shows (1) an ...
Section of a normal brain (left) and an HD brain (right). The HD brain shows extensive damage to the Section of a normal brain (left) and an HD brain (right). The HD brain shows extensive damage to the
The purpose of mitosis is to take diploid cells and make two identical clones. A shows a simplified The purpose of mitosis is to take diploid cells and make two identical clones. A shows a simplified
Video: Oxygen transport: association and dissociation & Factors that affect hemoglobin's saturation with O2

For a complete list of videos, visit our video library