# Search results

1. ### Chemistry Mystery

Hi, I know this is a physics/math forum, but I'd really like some help on this equilibrium question. :frown: Consider this reaction: 2NO2 <---> N2O2 If I increase the pressure, then the system will shift to the right, and thus the forward reaction rate will increase. After awhile, a...
2. ### Stats Question, any help is appreciated

but then what is the difference between independence and disjoint events?
3. ### Stats Question, any help is appreciated

I'm working on a question which requires you to understand the difference between Independence and disjoint events. The question is: Suppose 24% of a population have 4 years of college, and 15% are laborers/workers. From this, can you conclude that 0.24 x 0.15 = 0.036=3.6% of the population are...
4. ### Epsilon in Simple Harmonic Oscillators

No, i remember there's this formula for SHO x=Acos(wt), but i know that epsilon can be added into this formula, but can't figure out what.
5. ### Epsilon in Simple Harmonic Oscillators

Can anyone tell me what role epsilon play in a simple harmonic oscillator, and what the formula is relating epsilon to SHO?
6. ### Vector/1-D kinematics help

Er, this is too deep for me... lol. Do I need to worry about this stuff in high school, cus I have NO idea what you guys are talking about... :confused:
7. ### Do you prefer walking across a flat or arched type design?

1. The Tacoma Narrow Bridge 2. It was a disaster due to engineers who designed the bridge not being able to calculate the possibility of resonance/oscillation due to small input of wind force. 3. Yes 4. Let's just say I wouldn't cross ANYTHING that swung great vertical distances like...
8. ### Chemistry Reaction Rates

Huh? What do you mean by that?
9. ### Chemistry Reaction Rates

Yeah, i thought it was b) too. The main problem I'm having is understanding what increasing the mass of the "system" means. Can anyone explain? Does it mean increasing the mass of the entire reaction, such as all of the substances, etc.?
10. ### Vector/1-D kinematics help

Interesting concept.
11. ### Chemistry Reaction Rates

Er, how can it? the chlorine ions exist on both sides, and they don't take part in the reaction itself. Water molecules exists only on the product side. There's also only 1 correct answer.
12. ### Chemistry Reaction Rates

I came across this question on one of the practice papers I have and isn't sure about the answer, any help would be appreciated. The following reaction occurs at constant temperature and constant volume in a closed system: CaCO3(s) + 2H(ion)(aq) + 2Cl(ion)(aq) -> CO2(g) + H2O(l) +...
13. ### Vector/1-D kinematics help

Oh yea, I mean, a), not b) :rolleyes:
14. ### Vector/1-D kinematics help

Yes, sorry about this, I thought I posted this question in the wrong place, and posted again here. The correct answer is b), pointing it straight across, since we only consider one direction, north, and to get the maximum speed possible would be to point the boat directly across. Anywhere else...
15. ### Can someone help me?

Oh, i see, so even if you go straight, and get blown off-course, the distance you travel from south to north stays the same, right?
16. ### Can someone help me?

Thnx for the reply. I don't think where the boat lands matters, but i'd like to know, if you go north directly, wouldn't the distance you need to travel to reach the opposite shore increase since current blows you off-course? (Since it's a hypotenuse side of a right triangle). I thought it was...
17. ### Vector/1-D kinematics help

Hi, can anyone explain to me in detail the logic/physics to this question? I posted it in general physics, & i guess it's the wrong forum. So i'll post my question here: A riverboat is trying to go north and cross a horizontal river to the other side. In the river, there is a current...
18. ### Can someone help me?

Hey, I'm a high school physics student and I came across this question on one of my practice papers that stumbled me quite a bit. It's a relatively simple relativity/vector question, but I can't understand why the correct answer is what it is. Can any1 help me? Here's the question: Suppose...