Science & Mathematics - 10 November 2006

2006-11-10 16:08:58 · 28 answers · asked by Anonymous in Physics

With a single prism, as we all know, white light is broken into all of the colors in a rainbow.

What happens if you put another prism in series with the first? Does it recombine all the colors back into white light, or does it further refract the rainbow colored light?

I’d test this if I had two prisms but I don’t. Hoping someone has either done this simple experiment, or knows enough about optics to know the answer. 10pts to the winner… :-)

2006-11-10 16:08:04 · 4 answers · asked by taotemu 3 in Physics

a saturated solution of potassium nitrate or a saturated solution of potassium chloride? At 60° C?

2006-11-10 16:06:33 · 1 answers · asked by lisat2yr 1 in Chemistry

if there are 50, four-hundred pound men, traveling in a 1968 bus going at 150 miles per hour, and after 20 miles, the bus suddenly stops for 1 minute to pick up 25 more, 400 men, what is the average speed of the bus over a 100 course???

2006-11-10 16:05:54 · 3 answers · asked by bigsky 1 in Mathematics

2006-11-10 16:03:55 · 6 answers · asked by Anonymous in Other - Science

2006-11-10 16:00:31 · 3 answers · asked by Anonymous in Engineering

Is the only way to solve n = (log 0.05) / (log -0.6478) that has negative log numbers is only guessing and can we just remove the negative sign for the number? Is it correct and what is the reason behind it?

The context comes from my previous question which is below:
1 - r^n = 0.95
r^n = 0.05
n log r = log 0.05
n = (log 0.05) / (log -0.6478)

Oops -- log of a negative number!! Will have to think about this some more. But if I say n = (log 0.05) / (log 0.6478) (taking out the minus sign), then I get n = 6.8999, rounded up to n = 7.
IS IT CORRECT?

Out of curiosity, we have

S(7) = a(1-r^7)/(1-r) = 0.6359 a
S = a/(1 - r) = 0.6069

and S(7) / S = 1.04787

so S(7) is within 5% of S. Looks like your answer is n=7.

My only problem involves the log of a negative number, but on that topic, my brain is foggy right now. Anyway, hope this helps.

ANYONE has other methods of doing other than guessing method?

2006-11-10 15:56:34 · 2 answers · asked by Anonymous in Mathematics

Is this a small or large size?

2006-11-10 15:51:36 · 9 answers · asked by Anonymous in Other - Science

When you smell Orange juice for an examble does that mean we're inhaling small particles from the juice? if not then what is the matter of smell (odor, perfume)?

2006-11-10 15:51:18 · 12 answers · asked by firewireo 1 in Physics

Can u help me with this?

x^2(x squared) - 6xy + 8y^2(8y squared) = ?

2006-11-10 15:50:17 · 6 answers · asked by double B 2 in Mathematics

2006-11-10 15:49:21 · 4 answers · asked by Tammi M 1 in Engineering

2006-11-10 15:48:32 · 16 answers · asked by spicysaucylatina 4 in Mathematics

2006-11-10 15:47:49 · 4 answers · asked by ChrisK 1 in Earth Sciences & Geology

i promise people this is the last ? abt the chimpanzee
does the chimpanzee have a migration route?
haha
thanks for all the helpp<--thats to the people who've helped me and are gettin ready too
♥

2006-11-10 15:46:45 · 3 answers · asked by McKenzie 2 in Zoology

2006-11-10 15:45:47 · 6 answers · asked by ? 1 in Biology

A typical candy bar weights about 2 oz (1.00 oz = 28.4 g)
(a) Assuming that a candy bar is 100% sugar and that 1.0 g of the sugar is equivalent to about 4.0 Calories of energy, calculate the energy (in kJ) contained in a typical candy bar.
in kJ?
(b) Assuming that your mass is 67 kg and you convert chemical potential energy to work with 100% efficiency, how high would you have to climb to work off the energy in a candy bar? (Potential energy = mass g height, where g = 9.8 m/s2.)
in m?

2006-11-10 15:45:32 · 1 answers · asked by Anonymous in Chemistry

if we have 200, four-hundred-pound men in a 1975 bus going 180 miles per hour, and 200 of these men are mooning out the window, how long will it take this bus to go 200 miles if one of these men falls out, and the bus speed drops to 110 miles per hour??
this is figuring the mooning bus member fall out at the 100 mile mark...

2006-11-10 15:42:00 · 4 answers · asked by bigsky 1 in Physics

-4(2)^2
= (-4)(2)(2)
= (-8)(2)
=-16

or

-4(2)^2
=-8^2
=-16

Are both considered correct? I don't remember if the order of operation kicks in and you do what's in the parentheses first, which would be (2)^2, or multiply the -4(2)....

Thanks,

2006-11-10 15:41:17 · 8 answers · asked by Anonymous in Mathematics

i only want it for hazleton pennsylvania

2006-11-10 15:40:48 · 1 answers · asked by Anonymous in Earth Sciences & Geology

why not a oscillating point particle

2006-11-10 15:36:18 · 4 answers · asked by Anonymous in Physics

2006-11-10 15:34:39 · 7 answers · asked by Anonymous in Astronomy & Space

2006-11-10 15:33:16 · 7 answers · asked by Anonymous in Weather

What is the definition of σ bond? Usually it is used to describe the bonds in organic compounds. Can we use it to describe an inorganic molecules' bonds? Thank you!

2006-11-10 15:29:23 · 1 answers · asked by Anonymous in Chemistry

Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite.
MgCO3(s) MgO(s) + CO2(g) Hrxn = 117.3 kJ

What is H when 5.30 mol CO2 reacts with excess MgO?
kJ
What is Hrxn when 34.5 g CO2 reacts with excess MgO?
kJ

2006-11-10 15:28:46 · 2 answers · asked by kula h 1 in Chemistry

Are the two stuff equal?

2006-11-10 15:27:52 · 1 answers · asked by Anonymous in Chemistry

Anybody can visualize the shape of HCO3- to me? Many thanks!!

2006-11-10 15:27:12 · 1 answers · asked by Anonymous in Chemistry

2006-11-10 15:25:29 · 1 answers · asked by lisat2yr 1 in Physics

in today's society, everyone is pretty much depended on computers..but before they use another source of technology. im asking, "what else did they use before that?"

2006-11-10 15:18:01 · 13 answers · asked by true_2_1_self 1 in Engineering

Professor says, "Students will need to obtain a dataset of their choice (the source needs to be provided and verifiable). The dataset will need to have AT LEAST 50 observations and three variables. The dataset must have at least one ratio scale variable and at least one categorical variable."

Does this dataset meet the requirements?
http://nces.ed.gov/programs/coe/2006/section1/table.asp?tableID=440

Which one is the ratio-scale variable?

Thanks!!!

2006-11-10 15:16:13 · 4 answers · asked by thatgirlmeghan21 2 in Mathematics

2006-11-10 15:14:53 · 8 answers · asked by Anonymous in Astronomy & Space