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

Author Question: The units of proper motion are km/s because proper motion is the motion of stars across the sky. ... (Read 142 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Jul 27, 2018
The units of proper motion are km/s because proper motion is the motion of stars across the sky.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

A star has crossed the birth line and thus that star is now called a ________________.
 
  a. main-sequence star b. protostar
  c. YSO d. ZAMS


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meryzewe

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

False
RATIONALE: Units are not linear but angular so, for example, units of proper motion could be arc seconds/yr.

Answer to Question 2

c


viki

  • Hero Member
  • *****
  • Posts: 525
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


meryzewe

  • Sr. Member
  • ****
  • Posts: 346
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

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

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Range of Motion of the Temporomandibular Joint, Moving the Jaw From Side to Side Range of Motion of the Temporomandibular Joint, Moving the Jaw From Side to Side
The first step is to verify the proper operation of the tester by measuring the air frequency by ... The first step is to verify the proper operation of the tester by measuring the air frequency by ...
Moving the hip through its full range of motion. Moving the hip through its full range of motion.
Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ... Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ...
How to perform conversions between units with prefixes ranging from pico to mega How to perform conversions between units with prefixes ranging from pico to mega
Chemotactic motion of bacteria Chemotactic motion of bacteria
Video: Structures that affect circulation - heart and systolic/diastolic BP

For a complete list of videos, visit our video library