# Recent content by riseofphoenix

1. ### Archived What is the equivalent capcitance of this circuit! - Figured it out.

What is the equivalent capcitance of this circuit! -- Figured it out. I have a Physics final exam in 2 hours and I'm re-reviewing things.... This problem DOESN'T make any sense!! 17. If C1 = 2 F, C2 = 3 F, C3 = 5 F, C4 = 6 F, the equivalent capacitance of the circuit is: A. 8.5 F is...
2. ### Index of Refraction Concept - Extremely Confusing

I have just a few more questions regarding index of refractions and reflections... 8. A fly is 10 cm above the surface of a pond. How high above the water does the fly appear to a fish directly below (nair = 1, nwater = 1.333)? (A) 10 cm (B) 7.5 cm (C) 13.3 cm (D) 12.5 cm (E) fish cannot see...
3. ### Stressed about Physics Exam! Help with refractive index concept!

Anybody still willing to help me out? :(
4. ### Stressed about Physics Exam! Help with refractive index concept!

Ohh I get it. So n_2sin(30°) = n_3sin(60°)\\n_1 = n_2 For n2, θ2 is small, so n2 must be larger. For n3, θ3 is large, so n3 must be smaller. Thanks!! I have just a few more questions regarding index of refractions and reflections... 8. A fly is 10 cm above the surface of a...
5. ### Stressed about Physics Exam! Help with refractive index concept!

You still there? :(
6. ### Stressed about Physics Exam! Help with refractive index concept!

Or I should say... The index of refraction measures the bending of a ray of light when passing from 1 medium to another. The thicker the medium - the greater the "n", the slower the light passes, the smaller the angle (more towards the normal) The thinner the medium - the smaller the "n", the...
7. ### Stressed about Physics Exam! Help with refractive index concept!

Hmm...Well I had to google this but, according to what found. Light (coming out of material n2) bends AWAY from the normal A LOT when it gets to medium/material n3. This means that there is not as much density in medium n3 to slow light down as there is in materials n1 and n2 (which are...
8. ### Stressed about Physics Exam! Help with refractive index concept!

7. The figure shows the path of a portion of a ray of light as it passes through three different materials. What can be concluded concerning the refractive indices of these three materials. (A) n1 < n2 < n3 (B) n1 > n2 > n3 (C) n3 < n1 < n2 (D) n2 = n1 > n3 (E) n1 = n2 < n3 The...
9. ### Mirrors, Polaroid Films, Light/Wavelength help needed

Oh goodness... So what should M equal?
10. ### Mirrors, Polaroid Films, Light/Wavelength help needed

The answer has to be B then... Ok well since I know I got those top 3 questions wrong...I wouldn't mind moving on to the other questions I wouldn't mind you guys checking for me... I chose D…but I don't think it's right… I did this: Given: R = 10 cm f = -R/2 (since it's convex) = -10/2 = -5...
11. ### Mirrors, Polaroid Films, Light/Wavelength help needed

I forgot how to because I did this back in high school and my teacher (in college) just gave us a simple chart to follow and didn't emphasize the fact that we had to draw a ray diagram. :(
12. ### Mirrors, Polaroid Films, Light/Wavelength help needed

So the answer IS E. real (image on front), enlarged, inverted.
13. ### Mirrors, Polaroid Films, Light/Wavelength help needed

What do you mean?
14. ### Mirrors, Polaroid Films, Light/Wavelength help needed

Ok but my answer is still wrong though... The answer for 3 would have to be D.

:( :(