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

Author Question: Who originated the idea that planets go in ellipses around the sun? A) Copernicus B) Ptolemy C) ... (Read 75 times)

anshika

  • Hero Member
  • *****
  • Posts: 510
on: Jul 29, 2018
Who originated the idea that planets go in ellipses around the sun?
 
  A) Copernicus B) Ptolemy C) Kepler D) Galileo E) Brahe

Question 2

An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. The astronaut's destination is a star system 14.4 light-years away (one light-year is the distance light travels in one year).
 
  According to the astronaut, how long does the trip take? A) 14.4 y
  B) 22.7 y
  C) 9.34 y
  D) 15.0 y
  E) 4.20 y


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

E


anshika

  • Hero Member
  • *****
  • Posts: 510
Reply #2 on: Jul 29, 2018
Thanks


fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

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?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Multiple Planets Multiple Planets
The Inner Planets: A Comparison The Inner Planets: A Comparison
Location of the Planets Relative to the Sun Location of the Planets Relative to the Sun
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
Planets Planets
Planets Planets
Video: Pores and Ion Channels

For a complete list of videos, visit our video library