This topic contains a solution. Click here to go to the answer

Author Question: Which of the following would not be considered evidence for dark matter in clusters of galaxies? ... (Read 102 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
Which of the following would not be considered evidence for dark matter in clusters of galaxies?
 
  A) the total amount of stars
  B) the temperature of the intergalactic gas
  C) the velocities and radii of galaxy orbits around the center of mass in the cluster
  D) the curvature of gravitationally-lensed galaxies

Question 2

The choices below describe four hypothetical planets. Which one would you expect to have the most features of erosion? (Assume the planets orbit a star just like the Sun and that they are all the same age as the planets in our solar system.)
 
  A) Size: same as Venus. Distance from Sun: same as Mars. Rotation rate: once every 25 hours.
  B) Size: same as the Moon. Distance from Sun: same as Mars. Rotation rate: once every 10 days.
  C) Size: twice as big as Earth. Distance from Sun: same as Mercury. Rotation rate: once every 6 months.
  D) Size: same as Mars. Distance from Sun: same as Earth. Rotation rate: once every 18 hours.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bitingbit

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

A

Answer to Question 2

A




magmichele12

  • Member
  • Posts: 559
Reply 2 on: Jul 27, 2018
Excellent


robbielu01

  • Member
  • Posts: 336
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

For a complete list of videos, visit our video library