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

Author Question: What information do scientists use to estimate the total mass of the Milky Way Galaxy? a. The size ... (Read 113 times)

daltonest1984

  • Hero Member
  • *****
  • Posts: 536
on: Jul 28, 2018
What information do scientists use to estimate the total mass of the Milky Way Galaxy?
 a. The size of the galaxy from end to end.
  b. The number of stars and planets thought to be in the galaxy.
  c. The mass of Earth.
  d. The diameter of the galaxy.
  e. The fact that all the stars in the galaxy rotate about a common point.

Question 2

Which is the BEST description of what causes tides?
 a. Tides are caused by the Moon's gravitational pull on the Earth.
  b. Tides are caused by earthquakes.
  c. Tides are caused by the rotation of the Earth.
  d. Tides are caused by the gravitational pull of the Earth-Moon system.
  e. Tides are caused by the Earth's gravitational pull on the Moon.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Chelseyj.hasty

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 28, 2018
Answer to Question 1

e

Answer to Question 2

d


daltonest1984

  • Hero Member
  • *****
  • Posts: 536
Reply #2 on: Jul 28, 2018
Thank you!


Chelseyj.hasty

  • Sr. Member
  • ****
  • Posts: 319
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Metabolic rates of animals that differ in size. Metabolic rates of animals that differ in size.
Land mass looks like a synapse Land mass looks like a synapse
Scattergrams are a mechanism used by political scientists to show patterns and relationships among v Scattergrams are a mechanism used by political scientists to show patterns and relationships among v
Pressure is a result of the atmosphere’s mass. Pressure is a result of the atmosphere’s mass.
Climate models the flow of mass and energy Climate models the flow of mass and energy
For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ... For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ...
Video: Virtual Tour of the Heart

For a complete list of videos, visit our video library