rickjames

Somewhat homework...not work to be handed in but debated in class against the wave theory. I was designated on proving light as a particle during reflection. Thanks for your help.

I know this has been discussed to death and I acknowledge the fact that there truly is no conclusive answer. However, I have to do my best to outline that light is indeed a particle through its properties of reflection. So far, I've simply come up with the fact that laws of reflection follows laws of motion. Any help regarding other sources of light behaving as a partcle through reflection is appreciated. Also, what properties or experiments decidely supports the corpuscular theory (I know only about Photoelectric Effect). Furthermore, how does light behave as a wave through the following: Propagation, Refraction, Partial Reflection/Partial Refraction, Diffraction and Dispersion. Thanks.

1. A, B and C are points on the circumference of a circle, centre O, and ∠BAC=115°. Calculate the number of degrees in ∠OBC. I drew a diagram but could not come up with anything primarily because ∠BAC and centre O lie on opposite sides of chord BC (draw a quick diagram if you don't know what I mean). 2. ABCD is a quadrilateral inscribed in a circle and AB = CD. Prove that AC = BD. This is pretty simple I think, if AB = CD, then BC = DA (do I need to say why?). Then just use Pythag to prove the diagonals are equal.

It is correct that there is not enough information given to solve this problem using math and algebra but rather rely on some of Millikan's methods and common sense. However, let's say we have found the mass of a small marble, is there anyway mathematically to find the mass of the bag + large marble combined (since we need this to find how many small marbles are in each bag).

Hmm, just did a quick search and couldn't find it. Link?

Hey, here are all and only values we were given: Bag 1 - 31.5g Bag 2 - 61.5g Bag 3 - 79.5g Bag 4 - 49.5g Bag 5 - 86.7g Bag 6 - 44.1g Bag 7 - 18.3g Bag 8 - 143.0g Bag 9 - 121.5g Bag 10 - 229.5g I see you comeup with a pretty general formula. The problem we faced when using algebra is an uncontrollable number of unkwown variables; hence, we resorted to a technique that was not as a bad as trial and error but fairly prone to errors as well. GL!

We had to conduct a similar practice to Millikan's oil drop experiment in class. This is the situation: There are 10 bags each containing a different amount of small marbles of the same mass. There is also one big marble of different mass to the small marble added to each bag. Each bag is massed and that mass is given to us. Now through techniques similar to those of Millikan, we must: 1. Determine the mass of one SMALL marble. 2. Determine the number of SMALL marbles in each bag. Does anyone have any suggestions in terms of what method to use? I have one method that works in theory but is prone to many errors and discrepancies in the result. This method does not involve any mathematical formula or physics concepts so any advice that does incorporate math and physics is preferred. Thanks!

exactly

Thanks for you help so far. However, this is a grade 12 physics course and we have not learned either of those two formulas yet so I assume it is not permitted in our anwser. First of all, I must assume a perfectly circular path, find the average radius of the earth's orbit, find the circumference of the orbital path and then divide that by the number of seconds in a year to get the speed. Now what?

any ideas on how to find the average acceleration of the earth moving around the sun for an eight month time interval?

I have three isomers of an alcohol: 1-butanol, 2-butanol, 2-methyl-2-propanol and all three are mixed with 12 mol HCl. Now is this a halogenation reaction or hydrohalegenation reaction? And also how can intermolecular forces explain this. Doing the experiment, 2-methyl-2-propanol turns instantly cloudy, 2-butanol experience a tiny colour change and 1-butanol does not react. Any ideas?