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...
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...
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...
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...
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...
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...
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...
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. :(
:(:(:( Please ease my aching soul by helping me with this...
I submitted this assignment online and I don't know the answers yet or however many I got wrong.
I chose 45 because I know unpolarized light becomes this after going through a polarizer:
That single line is 180º, so I did...
Given:
noil = 1.16
nwater = 1.33
λviolet = 400 nm - Question 1: why did they give me this if i didn't have to use it?
m = 1 (first order) - Question 2: what do they mean by the term "first order"? I never understand :(
t = ?
Equation to use:
2noilt = mλ
t = mλ/2noil
t = (1)(400 nm) / 2(1.16)
t...
Fot Question 2,
I got the slope correct. It's 0.0339.
But how do I find B, given L = 4.1 cm?
This is what I did (I chose any value for F and I from the table):
B = F/IL
B = (0.0158 N) / (0.48 A)(0.041)
B = 0.0158/0.01968
B = 0.802 N/a
"INCORRECT"
:(
Oh it worked! Thanks!!
So all I need for B is do,
B = Faverage / IaverageLaverage
B = (0.02075)/(892.75 mA)(0.02525 m)
B = 0.02075/22.54
B = 0.000920586
B = 920 T