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

Author Question: Which of the following developed the theory that the planets circle the sun rather than circling ... (Read 42 times)

jeatrice

  • Hero Member
  • *****
  • Posts: 543
on: Jul 29, 2018
Which of the following developed the theory that the planets circle the sun rather than circling Earth?
 
  A) Copernicus B) Kepler C) Ptolemy D) Brahe E) Galileo

Question 2

Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of 0.65c relative to the planets, which are at rest relative to each other.
 
  When he is precisely halfway between the planets, a distance of 1.0 light-hour from each one as measured in the planet frame, nuclear devices are detonated on both planets. The explosions are simultaneous in Mark's frame. What is the difference in the time of arrival of the flashes from the explosions as observed by Mark?
  A) 0 min
  B) 180 min
  C) 90 min
  D) 360 min
  E) 113 min


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Melissahxx

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


jeatrice

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Jul 29, 2018
TY


Melissahxx

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Crop plants developed by selective breeding of the wild mustard plant. Crop plants developed by selective breeding of the wild mustard plant.
Semi-circle bridge Semi-circle bridge
Anna Freud’s Instinctual Theory Anna Freud’s Instinctual Theory
Set-Point Theory Set-Point Theory
Bronfenbrenner's bioecological theory Bronfenbrenner's bioecological theory
A closed loop conductor that forms a circle with a radius of is located in a uniform but ... A closed loop conductor that forms a circle with a radius of is located in a uniform but ...
Video: Muscle Fatigue and Recovery

For a complete list of videos, visit our video library