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 117 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?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Proper Hand Washing Proper Hand Washing
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 ...
Be sure that the clips are properly installed. Start the engine and check for proper operation. Be sure that the clips are properly installed. Start the engine and check for proper operation.
Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ... Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ...
Physics 12 - Interpreting Motion Physics 12 - Interpreting Motion
Expressing amounts of energy in different energy units is necessary to solve many chemistry ... Expressing amounts of energy in different energy units is necessary to solve many chemistry ...
Video: Effect of the environment on coat color in the Himalayan rabbit Animation

For a complete list of videos, visit our video library