× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
14
o
6
6
G
3
c
3
q
3
m
3
j
3
s
2
b
2
j
2
u
2
New Topic  
mikael mikael
wrote...
Donated
Posts: 12017
10 years ago
A star is moving toward the Earth with a speed of 0.9 c (90% the speed of light). It emits light, which moves away from the star at the speed of light. Relative to us on Earth, the speed of the light moving towards us (emitted by the star) is 
A) c 
B) 1.9 c 
C) 1.2 c 
D) 0.98 c 
Read 1916 times
2 Replies

Related Topics

Replies
wrote...
Donated
10 years ago
A) c  ⇒ All observers see the speed of light as c
B) 1.9 c 
C) 1.2 c 
D) 0.98 c
mikael Author
wrote...
Donated
10 years ago
Thank you.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1340 People Browsing
Related Images
  
 316
  
 310
  
 582
Your Opinion
Do you believe in global warming?
Votes: 423