Science & Mathematics - 10 October 2006

2006-10-10 16:18:54 · 13 answers · asked by Anonymous in Mathematics

I am building my own type of heating system: A meander of copper pipes under the floorboards of my house is filled with water. The water is in a closed cycle and gets warmed up by an instant water heater, which gets its power from a wind turbine capable of delivering 400W. While this may not sound like much, consider that the water heater will be fed with pre-warmed water all the time, as "what goes around comes around" I am hoping to create some serious heat with this (well, at least enough to keep an old Victorian house cozy at temperatures around freezing point). Would you say that could work? I am very unsure of myself, because I know nothing about plumbing and heating.
I'd be very grateful for input.
Thanks.

2006-10-10 16:18:51 · 3 answers · asked by Tahini Classic 7 in Physics

Can people pleeze help me do this problem!!!!!!!!!!!!!!!!
and please put it in the simpalest way as possible

Solve for x in the following formula.
y = (n/a)(a + x)

2006-10-10 16:15:28 · 10 answers · asked by Everyone and No One 3 in Mathematics

2006-10-10 16:15:03 · 6 answers · asked by tenstrike 2 in Biology

2006-10-10 16:12:03 · 10 answers · asked by kp.eric 2 in Other - Science

2006-10-10 16:11:51 · 10 answers · asked by Anonymous in Mathematics

i used google map, the image doesnt get as close as i want, is there another one that can get closer with more detail on the houses?

2006-10-10 16:11:42 · 7 answers · asked by darkpositive 1 in Geography

A place in Canada starting with X?

It can be a city, river, lake, anything

2006-10-10 16:09:12 · 3 answers · asked by Anonymous in Geography

2006-10-10 16:03:50 · 5 answers · asked by CoolCrab 2 in Mathematics

i have 15C , 30 H, and 2O. Now suppose there are three fatty acids with this mollecular formula. Are these saturated or unsaturated fats? how do you know?

2006-10-10 16:03:06 · 4 answers · asked by naruto 1 in Biology

I understand that you have to multiply both sides by LCD, which is 4, but it seems like my math instructions are leaving out the multiplication by 4 on the left side of the equation.

6 (x+6)
--------- = 4x - 1
4

2006-10-10 16:01:28 · 10 answers · asked by Survivor 3 in Mathematics

A car traveling at 29 m/s (65 mi/h) runs into a bridge abutment after the driver falls asleep at the wheel.

If the driver is wearing a seat belt and comes to reat within a 1.0 m distance. what is his acceleration?

A passenger who isn't wearing a seat belt is thrown into the windshield and comes to a stop in a distance of 10.0 cm what is the acceleration of the passenger?

Okay, so we have to find two accelerations, what formulas do i use to find out what they are...

2006-10-10 15:55:15 · 1 answers · asked by Trevor M 1 in Physics

2006-10-10 15:54:14 · 3 answers · asked by Crack Wayne 1 in Chemistry

2006-10-10 15:53:29 · 3 answers · asked by flashy flock 1 in Biology

what are some of the positives and negatives on exploring mars?

2006-10-10 15:51:24 · 6 answers · asked by nunezred 2 in Astronomy & Space

1) We want to graph the function y = x^6 so it looks linear. Should we use a semi-log or log-log graph?
What is the slope and intercept of the straight line? State your reasoning.

2) We want to graph the function y = 5.e^(3.x) so it looks linear. Should we use a semi-log or log-log graph?
What is the slope and intercept of the straight line? State your reasoning.

3) In a clear sentence, what is the usefulness of a log-log graph?

4) In a clear sentence, what is the usefulness of a semi-log graph?

Good Luck! :)

2006-10-10 15:49:29 · 2 answers · asked by Anonymous in Physics

Can people pleeze help me do this problem!!!!!!!!!!!!!!!!

Solve for x in the following formula.

y = (n/a)(a + x)

2006-10-10 15:48:59 · 7 answers · asked by Everyone and No One 3 in Mathematics

is it mass=weight times gravity or weight divided by gravity?

2006-10-10 15:48:29 · 8 answers · asked by superstar 1 in Engineering

I am supposed to draw a FBD for a car traveling around a "loop-the-loop". It is at its highest point in the loop. Am I correct in saying the acceleration is straight down, towards the center? Also, was force(s) should I have on this FBD other that gravity? We are to assume negligible friction. I also need an equation for the force in the radial direction (vertical in this case). Car has mass m and loop has radius r. Should the equation be that F=m*v^2/r^2 or something similiar to that? Answer one part if that's all you can help with. Thanks!

2006-10-10 15:47:35 · 5 answers · asked by Anonymous in Physics

If 130. mL of 1.10 M KCl are mixed with 120. mL of 3.10 M KCl, what is the molarity of the final solution? Assume the volumes are additive.

2006-10-10 15:44:09 · 3 answers · asked by Anonymous in Chemistry

the big crush is when everything in the univeres gets pulled into the middle of the uviveres into a super dense pin point the big expansion is when the univeres expands so fast it rips it's self apart.

2006-10-10 15:41:26 · 11 answers · asked by Anonymous in Astronomy & Space

You are in a point on floor from where u see the top of a tree with an angle of 60º, then you walk backwards 10 meters and the angle is 30º. What is the tall of the tree and how do you get it?

2006-10-10 15:41:21 · 8 answers · asked by Anonymous in Mathematics

2006-10-10 15:40:49 · 5 answers · asked by santa clause 2 in Zoology

Calculate the molarity of each ion in 0.450 M Na3PO4.

M Na+ =?
M PO43- =?

2006-10-10 15:39:24 · 2 answers · asked by Anonymous in Chemistry

As the experiment goes, we add color reagent on the spots in order to see the colors right? But what is the effect of the color reagent to leadto some of the colourless spots becoming visible?

2006-10-10 15:38:45 · 1 answers · asked by LadyXSakura 3 in Chemistry

my question is, if true that satan made from fire, it's true if i said they are from the star, or fire planet .

2006-10-10 15:36:07 · 20 answers · asked by Anonymous in Astronomy & Space

2006-10-10 15:34:24 · 9 answers · asked by blackat9092 2 in Mathematics

If light waves required particles to transfer their motino, as sound waves do, would we still be able to see the sun, moon, and stars? How would the conditions on earth dffer?

2006-10-10 15:34:12 · 9 answers · asked by I♥David and Tom 4 in Astronomy & Space

it's now possible to change the penis into vagina how abot transplant ovary, uterus, etc. It's possible

2006-10-10 15:33:21 · 6 answers · asked by Anonymous in Biology

A shell is fired forom the ground with an initial speed of 1700 m/s at an initial angle of 58 degrees to the horizontal
The acceleration of gravity is 9.81 m/s2
Neglecting air rexestance how do I find the shell's horizontal range and the amount of time the shell was in motion?

2006-10-10 15:33:18 · 5 answers · asked by wish1oh1 1 in Physics