Science & Mathematics - 18 December 2006

They have determined that each truck will hold 20 fifty- pound boxes of 40 twenty-five pound boxes. There are twice as many twenty-five pound boxes as fifty-pound boxes.

How many of each kind of box are there?

2006-12-18 09:08:21 · 3 answers · asked by Paki Kuri 1 in Mathematics

remember the difference between directly proportional and inversely proportional and indirectly. When I see these in question I can not understand the question. Can anyone help me please!?

2006-12-18 09:07:30 · 2 answers · asked by Anonymous in Mathematics

What number of valence electrons are indicated by these electrons configurations?
a) 1s^2 2s^2 2p^6 3s^2 3p^1

2006-12-18 09:07:09 · 5 answers · asked by Stephanie 3 in Chemistry

2006-12-18 09:05:02 · 7 answers · asked by urbanknight35 1 in Geography

How is viscosity used in everyday life or in real world situations? Please respond ASAP. Thanks.

2006-12-18 09:01:52 · 14 answers · asked by bayernfootballer 2 in Chemistry

My Mom is trying to find a new job and she REALLY enjoys reading maps and giving directions does anyone know of a job that she could do?

2006-12-18 09:01:43 · 5 answers · asked by NewMama 1 in Geography

I was wondering why sugars had to be used in DNA instead of other structures. Could other substitutes be used instead that would accomplish the same results (structure, hydrogen bonding, etc.)?

2006-12-18 09:01:37 · 2 answers · asked by yahooer 1 in Chemistry

it has 3 letters

2006-12-18 09:01:08 · 2 answers · asked by kobe 1 in Weather

Need Help. I get 1.9949 * 10^-8 but it says its wrong. Can someone help me. Four 8.5 kg spheres are located at the corners of a square of side 0.68 m. Calculate the magnitude and direction of the gravitational force on one sphere due to the other three.

2006-12-18 08:59:31 · 5 answers · asked by tjmierzwa 2 in Physics

2006-12-18 08:58:29 · 9 answers · asked by Dj Smith 1 in Physics

It's very cold over here in germany, and today it was also very foggy... Well.. i stayed in my room the whole day after school, now i went outside with my dog, and i wanted to yawn, but i couldn't, because i promptly had to choke... Is it because of the high air humidity? Did it make a difference, that i was inside the whole day?

Sandro

2006-12-18 08:58:04 · 3 answers · asked by Sandro L 1 in Biology

Science ExtraCredit

2006-12-18 08:57:27 · 4 answers · asked by superhotshot999 2 in Other - Science

any help to this question would be gratefully received....its doing my head in!

2006-12-18 08:56:06 · 6 answers · asked by Anonymous in Mathematics

Bit of a random one....?

2006-12-18 08:55:59 · 13 answers · asked by Frannie_kins 1 in Other - Alternative

2006-12-18 08:55:24 · 3 answers · asked by Eileen 1 in Mathematics

Tell How many significant figures are in each:

a) .00060030
b) 1.83 X 102
c) 5000

2006-12-18 08:54:20 · 2 answers · asked by Anonymous in Chemistry

if i wanted to know how to finish this
AgNO3 + NaCl=>
AlCl3 + NH4OH=>

how do i do it?

2006-12-18 08:54:16 · 2 answers · asked by disasterrrific 1 in Chemistry

electronegativity? am i right!

2006-12-18 08:54:12 · 5 answers · asked by Lisa 1 in Chemistry

2006-12-18 08:52:32 · 4 answers · asked by greekmanuk81 2 in Geography

In theory, I would imagine that with several thousand volts with low amps, one could withstand this much power and not be electrocuted, right. Then how many volts and amps does the electric chair use and what is the minimum power requirement that would fry the prisoner. The electric chair is hardly used anymore, in favor of lethal injection and to me, the chair would be cruel and punishment overkill. Just curious on the power issue.

The movie, The Green Mile, had a very disturbing electric chair scene which really seemed real. When they fired up the chair, the whole prison's lighting system started flickering and dimmed out

2006-12-18 08:51:09 · 4 answers · asked by mrfrudd2006 3 in Physics

2006-12-18 08:47:38 · 9 answers · asked by Dj Smith 1 in Mathematics

Consider the arithmetic sequence 6, 3, 0, -3, -6, -9....

Write a recursive formula that describes this sequence. Use Uo for the starting term?

Write an explicit formula for this sequence?

Determine the value of U27?

If you were to plot (n, Un) for this sequence and then draw a line through the points, what would be the slope and the y-intercept of the line?

2006-12-18 08:46:03 · 1 answers · asked by brandon_fargerson 2 in Mathematics

|x+2| -4 = 3


i need help on the answers for both "sides" of this problem meaning that what would the answer be if the solution being 3 was changed to -3???

ahh so confusing! thanks!!!

2006-12-18 08:45:57 · 24 answers · asked by Anonymous in Mathematics

what is Life.

2006-12-18 08:44:59 · 8 answers · asked by roger c 2 in Earth Sciences & Geology

A buoy oscillates in simple harmonic motion as waves go past. At a given time it is noted that the buoy moves a total of 3.5 feet from its low point to its high point, and that it returns to its high point every 10 seconds. Write an equation that describes the motion of the buoy if it is at its high point at t=0.

---Thanks in advance for any answers or help to this. All I know is it is a cosine equation. I have my pre-calculus final exam tomorrow and this is the only thing on the review sheet I don't get because I was absent the day it was taught.

2006-12-18 08:44:03 · 2 answers · asked by Taylor W 1 in Mathematics

the distribution of the scores on a standardized exam is approximately normal with mean 400 and standard deviation 35. Between what values do the middle 50 percent score lie?

2006-12-18 08:43:10 · 2 answers · asked by Eugene D 1 in Mathematics

Find the probability of drawing a 3 or a heart from a regular (bridge) deck of cards. (such a deck consists of four suits of 13 cards. The suits are hearts, spades, diamonds and clubs. The cards are 1 through 10, jack, queen, king)

2006-12-18 08:39:02 · 7 answers · asked by Eugene D 1 in Mathematics

2006-12-18 08:39:01 · 6 answers · asked by Dj Smith 1 in Mathematics

2006-12-18 08:38:31 · 9 answers · asked by Twinki 2 in Astronomy & Space

Is it dangerous??? like lead for example

2006-12-18 08:37:18 · 3 answers · asked by marty m 1 in Earth Sciences & Geology