Recent content by Violagirl

Homework Statement A particle moving at 5 m/s reverses its direction in 1 s to move at 5 m/s in the opposite direction. If its acceleration is constant, what distance does it travel? A) 1.25 m B) 2.5 m C) 5 m D) 10 m Homework Equations d = 1/2 (v0 + v)t The Attempt at...

Homework Statement A particle starts from rest and travels in a straight line for 4 s. If the particle is accelerating at a constant rate, which of the following could be the distances traveled by the particle during each consecutive second? A) 10 m, 20 m, 30 m, 40 m B) 5 m, 15 m, 25 m...

Homework Statement The image formed by a simple two lens microscope is (a) real and inverted. (b) real and upright. (c) virtual and upright. (d) virtual and inverted. (e) none of these. Homework Equations N/A The Attempt at a Solution I was confused on how to understand how...

Thanks a lot for your help! I got a little bit farther with the problem. Based on what you said about each wavelength having its own maxima, this is what I got: For 700 nm: 4d (n2)/λ700 = 2m+1 For 500 nm: 4d (n2)/λ500 = 2m+1 So I suppose then you can combine these. Based on the...

Homework Statement Suppose that light is incident on a double slit apparatus, with a slit separation d at an angle of ∅ (phi) to the normal (see attached diagram). A) Derive an equation; in terms of the variables d, ∅, θ, integers m, and the wavelength λ of the incoming light; that yields the...

Homework Statement You decide to become a forensic pathologist because you enjoy working with dead people-they don't talk back-more than with the living. In one murder investigation, you find an unknown liquid in the victim's stomach. To identify this liquid, you pour a known amount of it onto...

Yes, that is true, kx is what would correspond to pi, 2pi, etc.

Oooh, true. I guess I was thinking of it in general terms like 0, pi, 2pi, etc. And I guess from a standing wave, since we see one full peak from a standing wave, that I thought that k would correspond to pi since we see it travel from 0 to pi in the distance of a peak. This question was...

Thanks for clarifying number 1, it makes more sense now. For 2, well I know from the equation that k = 2pi/λ. For a standing wave, λ corresponds to 1/2L. And I know it's half a wavelength, it should be equivalent to pi. I guess from there though, I wasn't sure how to understand number 2...

Homework Statement 1. A 5.0 H inductor is connected to a 120 V rms, 60 Hz ac power supply. Periodically, the energy stored in the inductor reaches a maximum value. What is this maximum value? A) 0.010 J B) 0.020 J C) 0.40 J D) 0.80 J E) 10.0 J 2. A standing wave on a string is...

Oooh! Ok got it. I wanted to verify my understanding when we were told that the velocity was 0.75 times its original velocity in water. Got an answer of 3.75 x 10^-7 m, which makes sense as an answer. Thanks!

So for finding the wavelength then, how exactly do you use the information of v being reduced to 0.75 times its original velocity to find the new wavelength in water then?

So I went back to look at this problem again and I think I found what the graph would look like for part a at time zero. I have the document attached. My question for B then, for the equation found for part B, which was: y = A sin (kx + ∏/2) does this mean then that the graph would still...

Homework Statement A wave is represented by y = A sin (kx + ωt). Draw two cycles of the wave from x = 0 to x = 2λ at a) t = 0; b) t = T/4, where T = 1/f = 2∏/ω Homework Equations y = A sin (kx+ωt) k = 2∏/λ (number of wave peaks) The Attempt at a Solution I had a really hard...

Homework Statement A light wave has a frequency of 6 x 1014 Hz. A) What is its period? B) What is its wavelength in a vacuum? C) When the light wave enters water, its velocity decreases to 0.75 times its velocity in vacuum. What happens to the frequency and wavelength? Homework Equations...