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

Author Question: Asteroid Ida was photographed by the Galileo spacecraft in 1993, and the photograph revealed that ... (Read 55 times)

Tazate

  • Hero Member
  • *****
  • Posts: 532
on: Jul 29, 2018
Asteroid Ida was photographed by the Galileo spacecraft in 1993, and the photograph revealed that the asteroid has a moon, which has been named Dactyl.
 
  From the dimensions of Ida and its general features, one can estimate the mass of Ida to be 4.5  1016 kg, and the distance between Dactyl and Ida is approximately 90 km. Assuming a circular orbit, what would be the orbital speed of Dactyl? G = 6.67 x 10-11 Nm2/kg2.
  A) 5.8 m/s
  B) 11 m/s
  C) 2.3 m/s
  D) 2.9 m/s
  E) 30 m/s

Question 2

Using K = 3/2 kT, what is the average kinetic energy of a He atom at:
 
  (a) 10. K?
  (b) -196.C?
  (c) 100.C?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

abctaiwan

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) 2.1  10-22 J = 1.3 meV
(b) 1.59  10-21 J = 0.0099 eV
(c) 7.72  10-21 J = 0.0482 eV


Tazate

  • Member
  • Posts: 532
Reply 2 on: Jul 29, 2018
Excellent

TheNamesImani

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of
Achondroplasia. The individual in this photograph has the reduced limb development that typifies thi Achondroplasia. The individual in this photograph has the reduced limb development that typifies thi
Arthritis. (a) Photograph of osteoarthritis within the joints of the fingers. Arthritis. (a) Photograph of osteoarthritis within the joints of the fingers.
Asteroid Eros Asteroid Eros
Shortly after his death, George Washington had already become myth—part Moses, part angel—in this wo Shortly after his death, George Washington had already become myth—part Moses, part angel—in this wo
(c) A photograph of a hemagglutination reaction. In the tube labeled 0, there is no agglutination, ... (c) A photograph of a hemagglutination reaction. In the tube labeled 0, there is no agglutination, ...
Video: Multiple Sclerosis Animation

For a complete list of videos, visit our video library