× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Science-Related Homework Help Physics
New Topic  
abari1 abari1
wrote...
Posts: 2
Rep: 0 0
11 years ago
1. The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The  ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v2/v1, is

a. 1.99
b. 1.07
c. 0.932
d. 0.511
e. 0.760

So to work out the problem here is what I did.

n1= ethyl alcohol
n2= carbon tetrachloride

n1 = c/v

v1 = c/n1

n2 = c/v

v2= c/n2

v1 = 2.21e8
v2=2.05e8

v2/v1 = 0.93

is the answer c?
Read 998 times
1 Reply

Related Topics

Replies
wrote...
#1
11 years ago
Quote from: abari1 (11 years ago)
1. The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The  ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v2/v1, is

a. 1.99
b. 1.07
c. 0.932
d. 0.511
e. 0.760

Here's a simple equation n2/n1=v1/v2...so,vct/vea=nea/nct=1.223 divided by 1.595 and thats 0.7667
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1234 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 176
  
 951
  
 263
Your Opinion
Who's your favorite biologist?
Votes: 586
Previous poll results: Which 'study break' activity do you find most distracting?