Science & Mathematics - 29 January 2007

2007-01-29 17:47:57 · 4 answers · asked by alferido a 1 in Mathematics

The solution to this equation => T = 1 / 1 - SQRT(0.8)^2 <== is T=167

I can't come up with a way to solve for that answer. Would appreciate someone showing me a step-by-step solution to the equation.

2007-01-29 17:47:11 · 4 answers · asked by Chug-a-Lug 7 in Mathematics

2007-01-29 17:44:05 · 1 answers · asked by Anonymous in Weather

2007-01-29 17:44:03 · 4 answers · asked by Anonymous in Biology

2007-01-29 17:42:13 · 1 answers · asked by Anonymous in Zoology

2007-01-29 17:42:12 · 1 answers · asked by Anonymous in Biology

2007-01-29 17:41:25 · 4 answers · asked by murali s 1 in Engineering

2007-01-29 17:41:17 · 2 answers · asked by NEWTON PATI 1 in Chemistry

2007-01-29 17:39:44 · 1 answers · asked by Anonymous in Physics

besides it's eating mosquitoes, leaf hoppers, tree borers, centipedes, termites, etc...

2007-01-29 17:37:58 · 1 answers · asked by heyyyleni 2 in Biology

It is a 10th class stanadered math question. Pls explain with example.

2007-01-29 17:37:56 · 7 answers · asked by Anonymous in Mathematics

In a third order chemical reaction the number of grams X of a compund obtained by combining 3 chemicals is governed by
dX/dt= k(a-X) (b-x) (c-x).
solve the DE under the assumption a,b,c are not equal

2007-01-29 17:37:16 · 2 answers · asked by wills 3 in Mathematics

It is a 10th stanadered math question. Pls explain with example.

2007-01-29 17:35:59 · 6 answers · asked by Anonymous in Mathematics

Two drivers, Alison and Kevin, are participating in a drag race. Beginning from a standing start, they each proceed with a constant acceleration. Kevin covers the last 1/4 of the distance in 3 seconds, whereas Alison covers the last 1/3 of the distance in 4 seconds. Who wins and by how much time?

the answer to the question is; Alison wings by 6root(3) - 4 root(6) = 0.594 sec. but i dont know how they get the answer. i know the math, but i dont know how to set up the equation. plz help!

2007-01-29 17:35:31 · 2 answers · asked by Jian H 2 in Mathematics

i) CH3COOH(ka = 10-5) + NaHCO3 -><- CH3COONa + H2CO3(ka = 10-7)

ii) phenol(ka = 10-9) + NaHCO3 -><- C6H5ONa + H2CO3

Based on these calculations, can you suggest why NaHCO3 cannot be used in extracting phenols from organic mixtures?

part b) Phenols can be extracted into aqueous solutions with Na2CO3(ka of HCO3- = 10-10)

2007-01-29 17:33:42 · 1 answers · asked by Vaynthe 3 in Chemistry

i to the square root of 2, -i to the square root of 2

2007-01-29 17:33:32 · 1 answers · asked by roflroflrofl123 3 in Mathematics

-3x = -36 + 7y
-3x + 2y = -36

please explain how you came up with the answer thanks =)

2007-01-29 17:32:57 · 5 answers · asked by Anonymous in Mathematics

why or why not?

2007-01-29 17:32:30 · 7 answers · asked by Anonymous in Physics

please help me science homework thanx

2007-01-29 17:28:19 · 6 answers · asked by DAMER 2 in Botany

2007-01-29 17:26:51 · 2 answers · asked by Anonymous in Botany

Here are some questions I have tried to answer for astronomy class that I can't seem to find the answers to anywhereL

1. What are the celestial coordinates of an object that lies directly south o f the Autmnal Equinox and 40 deg. from the south celestial pole?

2. What are the celestial coord. of an object that lies 15 deg. directly north of the winter solstice?

3. If you were standing on the equator, stars would move in what direction overhead?

4. At the north pole which direction?

5. At the winter solstice, how much less energy per unit area falls on Winnepeg, Canada (50 deg. north latitude) vs. Houston (~29 deg. north latitude)?

6. How many miles are there at the equator per time zone?

7. What is the moon-earth-sun orientation when a full moon is observed?

8. Orientation when a first quarter moon?

9. What is the parallax angle for a (alpha) Centuri (4.2 lightyears away) as viewed from earth at June 1 & Dec. 1?

Answers to ANY of these appreciated!!!

2007-01-29 17:25:57 · 3 answers · asked by TelleyJade 3 in Astronomy & Space

2007-01-29 17:24:59 · 7 answers · asked by Random G 3 in Mathematics

How many grams of Na are in 385 ml of a .75 M Na2CO3 solution??

2007-01-29 17:24:13 · 2 answers · asked by Anonymous in Chemistry

just curious?

2007-01-29 17:23:21 · 7 answers · asked by rayu j 1 in Astronomy & Space

2007-01-29 17:23:14 · 6 answers · asked by Anonymous in Biology

Thanks in advance for the help.

2007-01-29 17:22:12 · 6 answers · asked by Random G 3 in Mathematics

ok i need help in geography, it says:
a location is 30 degrees north and 45 degrees west is ............ of the prime meridian and ............ of the equator

2. a location is 30 degrees south and 45 degrees east is ............ of the prime meridian and is ........... of the equator.

so can somebody help me understand that type of stuff??

2007-01-29 17:18:34 · 4 answers · asked by Anonymous in Geography

How would you find the equation of a line if you were given the slope and the x-intercept?

2007-01-29 17:18:06 · 9 answers · asked by robpurpleblazekamp 2 in Mathematics

In terms of material properties, filament length and filament surface area.

2007-01-29 17:17:39 · 1 answers · asked by Josh L 1 in Engineering

A lead sphere has a diameter that is 0.05% larger than the inner diameter of a steel ring when each has a temperature of 70.0 oC. Thus, the ring will not slip over the sphere. At what common temperature will the ring just slip over the sphere?


Cheers, any help is much appreciated.

2007-01-29 17:16:24 · 3 answers · asked by Vanessa M 1 in Physics