« previous next »

Author Question: Assuming the encounter hypothesis is correct and planets can only form from the gravitational ... (Read 152 times)

karen

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
Assuming the encounter hypothesis is correct and planets can only form from the gravitational interactions between passing stars, what implications does this have for the possibility of life elsewhere in the universe?
 
  A) there would be no possibility of life at all because close stellar encounters never occur
  B) life would be exceedingly rare because close stellar encounters are exceedingly rare
  C) we have no way to determine the probability of close stellar encounters so we have no way of knowing
  D) life would be very common because stellar close encounters are constantly occurring

Question 2

The mass of Mars, 6.40  1023 kg, is about one-tenth that of the Earth, and its radius, 3395 km, is about half that of Earth. What is the mean density of Mars?
 
  What will be an ideal response?


jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

3.90  1012 kg/ km3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

karen

  • Hero Member
  • *****
  • Posts: 537
Reply #2 on: Jul 27, 2018
TY


jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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.

Covalent Bonding Can Form Compounds Covalent Bonding Can Form Compounds
Correct use a fire extinguisher Correct use a fire extinguisher
This chart illustrates the “drip down” model of government. In this, politics is formed by the soc This chart illustrates the “drip down” model of government. In this, politics is formed by the soc
Headsets are ergonomically correct and allow the medical assistant or receptionist to use both hands Headsets are ergonomically correct and allow the medical assistant or receptionist to use both hands
How to transform any rectangular equation to polar form How to transform any rectangular equation to polar form
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Fetal development - Weeks 9 to 38

For a complete list of videos, visit our video library