× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
b
2
M
2
V
2
f
2
c
2
c
2
K
2
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
tere tere
wrote...
Go to Answer
Posts: 500
Rep: 0 0
6 years ago
What is the minimum distance of two points on the moon that can be just resolved by the Keck 10. meter telescope in Hawaii (use a wavelength of 600. nm, lunar distance of 380. thousand Km):
 
  (a) if there were no atmosphere?
  (b) if the atmosphere limits resolution to 0.2 arc-sec?

Question 2

You are designing a generator with a maximum emf 8.0 V. If the generator coil has 200 turns and a cross-sectional area of 0.030 m2, what would be the frequency of the generator in a magnetic field of 0.030 T?
 
  A) 7.1 Hz
  B) 7.5 Hz
  C) 8.0 Hz
  D) 22 Hz
  E) 44 Hz

Question 3

How far are you from your image when you stand 0.75 m in front of a vertical plane mirror?
 
  A) 0.38 m
  B) 0.75 m
  C) 1.5 m
  D) 3.0 m
  E) none of the given answers
Read 74 times
2 Replies
Replies
Answer verified by a subject expert
lizzynorrislizzynorris
wrote...
#1
Top Poster
Posts: 516
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

tere Author
wrote...
#2
6 years ago
tremendous help
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  553 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 1203
  
 514
  
 524
Your Opinion
Which country would you like to visit for its food?
Votes: 263
Previous poll results: How often do you eat-out per week?