× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
Home Q & A Board Science-Related Homework Help Physics
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
Rep: 58 2
12 years ago
Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the distance from the point of closest approach to the center of Earth) of 6.61 × 106 m and an apogee (the distance from the furthest point in the orbit to the center of Earth) of 7.33 × 106 m. Its mass was 83.5 kg. What was the difference in kinetic energy as it moved from perigee to apogee? The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2.
A) 8.27 × 107 J
B) 6.44 × 107 J
C) 1.93 × 108 J
D) 3.50 × 108 J
E) 4.94 × 108 J
Read 3077 times
1 Reply

Related Topics

Replies
wrote...
#1
Educator
12 years ago
E
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1272 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 551
  
 168
  
 254
Your Opinion
How often do you eat-out per week?
Votes: 79
Previous poll results: Which is the best fuel for late night cramming?