Science & Mathematics - 3 December 2006

what is a neap tide and what moon phases do they occur during

what is a spring tide and what moon phases do they occur during.

2006-12-03 07:42:45 · 4 answers · asked by IMNOTOKAY!!! 2 in Astronomy & Space

if we have 200, five-hundred pound men, riding in a bus traveling at 178 miles per hour, what is the average speed of this bus if it has to stop for 5 minutes at a frankfurter stand.. these men are hungry.. they order 800 frankfurters.. after this frankfurter stop, the bus immediately speeds back to 178 miles per hour... what is the average speed of this bus over a 100 mile course????

2006-12-03 07:42:17 · 4 answers · asked by bigschwinger 2 in Physics

2006-12-03 07:42:07 · 3 answers · asked by Fairycloth 1 in Biology

You answered one of my questions, i asked "if a mole is defined as the number of H atoms in 1 g of hydrogen, how many H atoms are there in a mole?" and you told me it was Avogadro's number 6.022 x 10 ^ 23... and thank you so much, but can you tell me why that is... is it because you multiplied 1 by avogadro's number? or for some other reason...

If it had been the same question, but with oxygen as the element, not hydrogen, would the answer still be the same? please help me!

2006-12-03 07:41:47 · 3 answers · asked by Anonymous in Chemistry

If 5*3=4
2*8=2
and 6*3=3,
find the value of 1*7=?

2006-12-03 07:41:41 · 2 answers · asked by Anonymous in Mathematics

2006-12-03 07:41:04 · 3 answers · asked by Yazzy 1 in Mathematics

2006-12-03 07:39:44 · 3 answers · asked by Yazzy 1 in Mathematics

If 12 moles of Al2O3 are produced, how many moles of aluminum reacted?

Write a balanced equation for the reaction of the magnesium and the oxygen.

2006-12-03 07:39:39 · 2 answers · asked by ME 1 in Chemistry

I need help in this lab book on labs 6,7,8,15,21. I need help on the post questions....I have most of them but there are a few I need help so if you have this book, have the answers, or can just help me out I have my messenger on or you can email me or post on here. Thanks

2006-12-03 07:39:28 · 1 answers · asked by fcb1012 2 in Chemistry

A student has made a 79, 56, 91, and 72 on four major exams. Determine the possible scores on the fifth exam that will result in a 75 or higher average.

I got 77%, but I don't know the equation. I just kept using different numbers until I came up with 77%.

2006-12-03 07:39:16 · 13 answers · asked by SweetnSpiceyBrown 2 in Mathematics

An acre is 43560 square ft; there are 2.54 cm in one in.

2006-12-03 07:38:37 · 3 answers · asked by GATTACA_GIRL 2 in Mathematics

2006-12-03 07:38:29 · 2 answers · asked by ib 1 in Engineering

A rectangular box with open top is to be formed from a rectangular piece of cardboard which is 192 inches by 140 inches by cutting a square of size x inches from each corner, and folding up the sides. What is the largest possible volume of such a box?

To solve this problem we need to maximize the following function of x:
f(x)=
over the interval from____ to____
We find that f(x) has a stationary point at x=
To verify that f(x) has a maximum at this stationary point we compute the second derivative f''(x) and find that its value at the stationary point is ______, a negative number.
Thus the maximum volume of the box is:

Diagram of the problem: http://i144.photobucket.com/albums/r162/patel748/5.png

2006-12-03 07:38:03 · 1 answers · asked by scarletandgray07 1 in Mathematics

an investor purchased 100 shares of united bank stock and 100 shares of wisconsin electric stock. the probability the bank stock will appreciate over a year 0,70 the probability the probability the electric will increase over the same period is 0,60

a)what is probability both stocks appreciate during the period
b)what is the probability the bank stock appreciates but utility does not
c)what is the probability at least one of the stocks appreciates

if you can show your work i ll be preciated

2006-12-03 07:37:54 · 2 answers · asked by Anonymous in Mathematics

2006-12-03 07:37:31 · 13 answers · asked by washerwoman 3 in Earth Sciences & Geology

Write a net ionic equation which describes this method.

Note: This question comes from a chemistry lab about the 'Study of Chemical Equilibrium'.

2006-12-03 07:35:00 · 2 answers · asked by Atonz T 2 in Chemistry

Sorry, again.

I need to design a lab to perform regarding photosynthesis. I intend to find the effect of temperature on photosynthesis by measuring the CO2 released from an Elodea plant at different temperatures. I'm using two probes - temperature and CO2. The question is - how should I change the temperature? Would it work if I placed the plant in three beakers of water of different temperatures and measured the CO2 concentration from those?

Also, this experiment needs to be done in school.

2006-12-03 07:34:47 · 2 answers · asked by Anonymous in Botany

2006-12-03 07:34:23 · 13 answers · asked by archaic_discovery 2 in Biology

I need the answer before dec. 19

2006-12-03 07:32:56 · 7 answers · asked by timmygrammer 2 in Geography

i think its pretty easy, but i can't seem to figure it out... here it is:

If a mole is defined as the number of H atoms in 1 g of hydrogen, how many H atoms are there in a mole?

2006-12-03 07:32:03 · 7 answers · asked by Anonymous in Chemistry

2006-12-03 07:31:38 · 12 answers · asked by Anonymous in Mathematics

Ok, when you drop a raw egg into plain water-it sinks.
When you drop a raw egg into salt water-it floats because it is more dense.
When you drop a raw egg into water with baking soda added-it sinks. Why?
Thanks in advance! :-)

2006-12-03 07:31:22 · 2 answers · asked by Aanchi11 2 in Chemistry

2006-12-03 07:31:21 · 13 answers · asked by fatman93@sbcglobal.net 1 in Astronomy & Space

2006-12-03 07:31:13 · 19 answers · asked by betty 1 in Earth Sciences & Geology

Is NaOEt a strong base or a good nucleophile?
Any help would be appriciated

2006-12-03 07:30:17 · 1 answers · asked by Michael N 2 in Chemistry

2006-12-03 07:30:01 · 2 answers · asked by yusef b 1 in Engineering

2006-12-03 07:29:54 · 3 answers · asked by ERNESTO D 1 in Earth Sciences & Geology

If yes then why?

2006-12-03 07:28:09 · 5 answers · asked by Anonymous in Mathematics

which one is which!!!!???im so confused..pliss help!! =[

2006-12-03 07:27:50 · 4 answers · asked by Anonymous in Geography

How many apples are left?

2006-12-03 07:27:45 · 3 answers · asked by Deliriouz 1 in Botany