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

Author Question: According to their rotation curves, most spiral galaxies A) rotate as a solid body. B) rotate ... (Read 99 times)

futuristic

  • Hero Member
  • *****
  • Posts: 638
on: Jul 27, 2018
According to their rotation curves, most spiral galaxies
 
  A) rotate as a solid body.
  B) rotate counterclockwise.
  C) have decreasing rotational speeds with increasing distance.
  D) contain dark matter.
  E) contain dark energy.

Question 2

Each of the following lists two facts. Which pair can be used with Newton's version of Kepler's third law to determine the mass of the Sun?
 
  A) Mercury is 0.387 AU from the Sun, and Earth is 1 AU from the Sun.
  B) The mass of Earth is 6  1024 kg, and Earth orbits the Sun in 1 year.
  C) Earth rotates in 1 day and orbits the Sun in 1 year.
  D) Earth is 150 million km from the Sun and orbits the Sun in 1 year.
  E) Jupiter is the most massive planet and has a mass of 1.9  1027 kg.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dawsa925

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


futuristic

  • Member
  • Posts: 638
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

chjcharjto14

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

The mollusc body plan. The mollusc body plan.
Human Body by Children Human Body by Children
upper body upper body
Planes of the body: coronal or frontal, transverse, and midsagittal. Planes of the body: coronal or frontal, transverse, and midsagittal.
Describe the functions of fat in the body Describe the functions of fat in the body
Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies. Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.
Video: Definition of heart rate

For a complete list of videos, visit our video library