Science & Mathematics - 21 December 2007

It's my husband's birthday and he got himself a telescope. The user's manual says we can see saturn's rings and the moons of venus .... It has a diameter of 12 cm, I think. We havent's tryed it yet as the sky is cloudy here.
Whatever, I know there are bigger ones if your willing to invest a few more bucks.
Here's my question: What kind of telescope do you have and what have you seen with it? (How far away was the object?)

2007-12-21 06:31:40 · 10 answers · asked by Anonymous in Astronomy & Space

Does gum get stuck in your digestive system or does it just break up like normal food?

2007-12-21 06:26:23 · 12 answers · asked by null 4 in Biology

A 30 degrees-60degrees-90degrees triangle that has one leg of lenght 1 and the hypotenuse of lenth 2 units. Call this triangle T1. (note that the answer that you get from the calculator on this problem is not the exact answer but is an approximation of the answer. Do not use your calculator answer but find the answer algebraically!)

What is the name of the process that allows you to calculate the lenght of the other leg of this triangle?

What is the formula?

Calculate the exact calue length of the second leg (x)

Note-1 is on the left side of the triangle 90 degrees. 2 is on the right side. (x) is at the bottom.

2007-12-21 06:26:20 · 12 answers · asked by cher-roll 2 in Mathematics

2007-12-21 06:22:28 · 7 answers · asked by civil_av8r 7 in Physics

2007-12-21 06:21:11 · 6 answers · asked by rubbingbirds 2 in Mathematics

Electrons generally flow from a point of deficiency to a point of excess in an electric current.

2007-12-21 06:15:18 · 5 answers · asked by flabbergasted 1 in Chemistry

2007-12-21 06:11:05 · 7 answers · asked by wackyvorlon 3 in Physics

1. the annual rate of deprecation, r, on a car that is purchased for P dollars and is worth W dollars t years later can be found from:
log (1-r) = 1/t log w/p

find the annual rate of depreciation on a car that is purchased for $14650 and sold 3 years later for $9500

answer: 13.4 %

2. the population of a city can be estimated by the equation
p= 108000e^0.05t
where t is the number of years fmor the present time, how many yeras will it take the population to reach 324,000?
answer: 22.0 years


i just dont understand how to do it! please help! thank you!

2007-12-21 06:06:04 · 2 answers · asked by Nana Callie loves to sing 4 in Mathematics

2007-12-21 06:04:33 · 7 answers · asked by ilfu 1 in Physics

2007-12-21 06:03:42 · 3 answers · asked by Sabrin Q 1 in Medicine

arent the most dominant species always meat eaters?

2007-12-21 06:01:36 · 33 answers · asked by Ramble 3 in Biology

Given part of an equation of a parabola in vertex form as y = a(x - 8)2 - 2. If this graph passes through the point (4, 6), what is the value of ‘c’ value when the equation is written in standard form?

2007-12-21 06:00:26 · 3 answers · asked by Shot Caller 2 in Mathematics

I have a liquid-in-glass thermometer that will record the min/max temp that it experiences (a six's thermometer). But it only goes to -40F. I need a similar glass thermometer to use to record the minimum temp in a place that could go to -80F. I've found a few alcohol thermometers that will read that low, but none of them will store the minimum temperature (by way of the small index that floats in the column).

I read that canadian weather observers have ones that will record a minimum down to -94F, but I've yet been unable to find any such instrument.

2007-12-21 05:58:09 · 4 answers · asked by treant985 2 in Physics

What do other animals have in common or something that is not in common.

2007-12-21 05:57:25 · 2 answers · asked by kakashisharinggon 1 in Zoology

1. the current of a river is 5 miles per hour. a boat travels between two points on the river. if it takes 2 hours to travel in one direction and 5/2 hours to travel in the other direction, what i the speed of the boat in still water?
answer: 45 miles per hour

2. rationalize the denominator
44x^4y / 16z^3
that whole fraction is under a square root sign
answer: x^2 (/11yz) / 2z^2

the / before the 11yz is a square root sign

3. solve for the variable
(w-4)= /(7w+2)
the 7w+2 is under a square root sign
answer: w=14
i dont understand why the answer isnt -1 also?

thank you!!!

2007-12-21 05:54:33 · 6 answers · asked by Nana Callie loves to sing 4 in Mathematics

I'm 90,000 miles from a virtual planet at some distant point in space. From v=0, I begin accelerating to that point along a straight line. Passing through this point, I record my time and speed.

I do this again, but from 110,000 miles. I record my time and speed after traveling (accelerating) exactly 100,000 miles (10,000 miles short of this point).

While it is obvious t1 is 'less than' t2, I need to Prove V1(first trip)=v2 (second trip). 'average acceleration' will not work.

Yes, I tried astronomy/space

2007-12-21 05:52:45 · 2 answers · asked by toolmaker 1 in Physics

Its almost three years now since that it happened.I hope it doesnt happen again but it will happen.

2007-12-21 05:52:28 · 5 answers · asked by Anonymous in Earth Sciences & Geology

sorry if this question seems stupid. i can label the hypotenuse because its always the longest side and its diagonal. i was told that you can find the opposite because it's 'opposite' the right angle on the triangle, but i can interperate both sides to be 'opposite' to the right angle. so how do i tell the difference between the opposite and the adjacent side? thanks

2007-12-21 05:50:36 · 22 answers · asked by Anonymous in Mathematics

2007-12-21 05:49:40 · 5 answers · asked by Anonymous in Physics

2007-12-21 05:48:50 · 12 answers · asked by Anonymous in Biology

It's 9min long. Answer after you've watched it all please. I couldn't sleep after I watched this. That's why i'm asking all these questions!!

http://www.youtube.com/watch?v=deoJUBW9CI8

2007-12-21 05:47:10 · 13 answers · asked by Cesaria Barbarossa 7 in Paranormal Phenomena

2007-12-21 05:44:35 · 5 answers · asked by Ashlie T 1 in Geography

If we assume the big bang theory is correct, in that the universe is expanding from an infinitely dense object taking up no space, it will one day contract/collapse to the same dense object and this expansion/contraction is a cyclic thing, what do you think is the likelihood that each cycle evolves human life or life of an equivalent level of advancement? ...and do you think there will ever be a chance for mankind to escape the big collapse?

2007-12-21 05:44:35 · 10 answers · asked by lbgpaul 3 in Astronomy & Space

√k + 5 = 4

a. k = -1
b. k = 1
c. k = 81
d. no solution

2007-12-21 05:42:12 · 8 answers · asked by . 1 in Mathematics

2007-12-21 05:40:42 · 7 answers · asked by Anonymous in Paranormal Phenomena

2007-12-21 05:39:06 · 9 answers · asked by Anonymous in Mathematics

2007-12-21 05:38:08 · 7 answers · asked by Anonymous in Mathematics

2007-12-21 05:37:18 · 5 answers · asked by Anonymous in Mathematics

2007-12-21 05:36:07 · 9 answers · asked by Anonymous in Mathematics

√7x - 60= √x

a. x = 12
b. x = -5, 12
c. x = 10
d. no solution

2007-12-21 05:36:06 · 3 answers · asked by mommawe'regoingtohell 1 in Mathematics