Science & Mathematics - 2 December 2007

not fiber glass but plain glass..

2007-12-02 03:39:48 · 0 answers · asked by Anonymous in Physics

1) Solve the equation 23 = h - 52 for h.

2) A mother weighs her baby by holding the baby and stepping on a scale. Their combined weight is 143 pounds and the mother's weight is 128 pounds. How much does the baby weigh? Let w be the baby's weight. Which equation can be used to find the baby's weight?

3) Solve the equation -9 = -a + 15 for a

2007-12-02 03:39:39 · 4 answers · asked by Anonymous in Mathematics

Or is it too far?

2007-12-02 03:39:31 · 4 answers · asked by Anonymous in Geography

2007-12-02 03:38:20 · 1 answers · asked by Francis V 1 in Engineering

Just a little strange isn't?
Why do they become transparent when they weren't to begin with? Please help, oh wise ones........

2007-12-02 03:38:12 · 3 answers · asked by john m 1 in Chemistry

Ok is this object has a mean density that ive calculated of 3x10^3km m^-3 and a size of 58km x 23 km and ellipsodial would it fit the description more of a planet, moon, comet or smaller planet or asteroid im stuck between a comet or asteriod, any insite upon this?

2007-12-02 03:36:51 · 2 answers · asked by ? 3 in Astronomy & Space

2007-12-02 03:33:31 · 3 answers · asked by Anonymous in Chemistry

I understand that "To find the rise over run for any degree value, you multiply 12 * tan(x) where x is the degrees." but I don't know how to calculate the run over rise. Any assistance would be greatly appreciated to compensate for my poor math ability.

2007-12-02 03:32:10 · 4 answers · asked by Philippa C 1 in Mathematics

2007-12-02 03:31:41 · 3 answers · asked by Anonymous in Astronomy & Space

The hydraulic oil in a car lift has a density of 8.30 102 kg/m3. The weight of the input piston is negligible. The radii of the input piston and output plunger are 7.60 10-3 m and 0.125 m, respectively. What input force F is needed to support the 27000 N combined weight of a car and the output plunger under the following conditions?

(a) The bottom surfaces of the piston and plunger are at the same level.


(b) The bottom surface of the output plunger is 1.10 m above that of the input piston.

2007-12-02 03:25:33 · 1 answers · asked by yummy_girlscout 1 in Physics

using a spring balance with a cord, ring stand or vertical rod, dowel with screw eye.

if an angle, let say A is smaller than angle B, what will happen to the tension in the cable.

2007-12-02 03:23:03 · 2 answers · asked by peipei91189 1 in Physics

does anybody know a weather website that has previous days on it?

2007-12-02 03:20:09 · 3 answers · asked by Marissa 2 in Weather

Astronomy

2007-12-02 03:19:10 · 11 answers · asked by Anonymous in Astronomy & Space

Including Kingdom, 1n, 2n, or n+n, unicellular or multicellular, sexual, asexual, or both for Euglena, Paramecium, Chlamydomonas, Oedogonium, Spirogyra, Fucus, Rhizopus, Peziza, and Coprinus

2007-12-02 03:18:04 · 1 answers · asked by Anonymous in Earth Sciences & Geology

A source emits sound waves isotropically. The intensity of the waves 3.37 m from the source is 2.39 × 10-4 W/m2. Assuming that the energy of the waves is conserved, find the power of the source.

2007-12-02 03:11:34 · 2 answers · asked by Anonymous in Physics

I need to know different cloud types of certain areas (Cirrus, Cumulus, etc) This is very important, I just need a site that records cloud types at certain areas.

2007-12-02 03:08:59 · 5 answers · asked by Mayank B 1 in Weather

A fence 3 feet tall runs parallel to a tall building at a distance of 5 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

2007-12-02 02:59:55 · 4 answers · asked by sporty 1 in Mathematics

Like does anyone know What acids are in soda and will they interact with Water to make it Not Evaporate?!

2007-12-02 02:49:46 · 5 answers · asked by Anonymous in Chemistry

angle of the vertex angle as a function of the length of the triang;e's base. Give a domain and range

2007-12-02 02:49:30 · 1 answers · asked by Russel 1 in Mathematics

suppose (X, г) is a solid topology г4 and F1,...,Fn be closed subset from X that F1∩F2∩...∩Fn=ø ,Prover for ever 1<=i<=n , there is a open subsets like Ūi that include Fi that :
Ū1 ∩ Ū2...Ūn=ø

2007-12-02 02:45:54 · 1 answers · asked by Anonymous in Mathematics

Scientists have been able to slow light down to speeds of less then 40 miles per hour, are there any applications of this regarding the theory of relativity? Would this cause the atoms to travel forward in time?

Sorry if my wording is a little ambiguous, I'm having trouble articulating the question.

2007-12-02 02:45:51 · 8 answers · asked by pythagoras 2 in Physics

2007-12-02 02:42:12 · 2 answers · asked by saeed khan 1 in Chemistry

2007-12-02 02:41:47 · 8 answers · asked by ilovedstny 1 in Mathematics

2007-12-02 02:41:37 · 1 answers · asked by kiki 1 in Chemistry

2007-12-02 02:40:38 · 1 answers · asked by theonewhoknowsnothing 1 in Engineering

2007-12-02 02:40:23 · 5 answers · asked by ilovedstny 1 in Mathematics

If you point your graphite pencil on a working cathodic PC or TV screen, what will happen ??? Are you in danger ?? In how big danger are you ?? What could be the intensity of the electricity striking you ??

What about a NOT- working cathodic screen.. if you do the same thing ??

And now let's come to Plasma screen.. They are built differently and they function differently. If you once again repeat the same procedure with a working Plasma screen.. what will happen to you ???

Now the same thing with a plasma screen connected to a machine that has been switched off.. ??

2007-12-02 02:40:20 · 4 answers · asked by Anonymous in Engineering

please please please help

2007-12-02 02:38:52 · 7 answers · asked by Anonymous in Mathematics

the answer can only be in a form that looks like this (a+2). but this is not the answer

2007-12-02 02:38:17 · 3 answers · asked by ilovedstny 1 in Mathematics

2007-12-02 02:38:13 · 1 answers · asked by Anonymous in Physics