Science & Mathematics - 3 October 2007

what is the smallest number of ppl in a room that would not share the same birthday?

can u show me the equation and details of how you did the problem

2007-10-03 09:42:14 · 2 answers · asked by oceanblue 3 in Mathematics

i want to be the one that actually draws up the blueprints and designs, so what type of engineer degree does that require? and anybody know a really good college for it?

2007-10-03 09:42:12 · 8 answers · asked by roll tide & go pats =) 3 in Engineering

Some part of southern France are bordering the mediterranean, and it makes some people consider that country to be mediterranean. why not the UK ? Gibraltar is as much a British territory than the riviera is a french territory ?

2007-10-03 09:41:49 · 3 answers · asked by Europan 3 in Geography

2007-10-03 09:40:58 · 3 answers · asked by Jesse R 4 in Chemistry

2007-10-03 09:39:58 · 3 answers · asked by Dyamond A 1 in Chemistry

2007-10-03 09:39:35 · 7 answers · asked by drew_wyatt 1 in Astronomy & Space

Fill in the blanks:

Element- H
Atomic Weight- 1
Mass of Element, g-
Amount, mol- 0.412
No. of atoms-

thanks!!!!!

2007-10-03 09:38:56 · 3 answers · asked by sillylilchalupa 1 in Chemistry

what is a polygon
regular(not regular etc)

2007-10-03 09:38:22 · 4 answers · asked by lisak 1 in Mathematics

How far does it move horizontally?
_m
How far does it move vertically?
_m

2007-10-03 09:37:34 · 1 answers · asked by Anonymous in Physics

I've heard so much bad things about the nursing field, like being overworked and underpaid. I'm wondering if they(nurses) had a second chance, would they have chosen a different career path.

2007-10-03 09:36:03 · 2 answers · asked by Jeordie 1 in Medicine

2007-10-03 09:34:06 · 3 answers · asked by Anonymous in Chemistry

yea I don't get these kinds of questions
any advice on how to solve them?
thanks

2007-10-03 09:30:18 · 1 answers · asked by Anonymous in Chemistry

A baseball (m = 154 g) approaches a bat horizontally at a speed of 40.6 m/s (90.8 mi/h) and is hit straight back at a speed of 54.0 m/s (121 mi/h). If the ball is in contact with the bat for a time of 1.03 ms, what is the average force exerted on the ball by the bat? Neglect the weight of the bat, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.

2007-10-03 09:30:08 · 1 answers · asked by txsweetpea512 1 in Physics

Find the slope of this line that passes through (3, 5) and (8,5)

okay, i understand what theyre asking....ive ploted the points, what do i do now????

2007-10-03 09:27:34 · 8 answers · asked by Anonymous in Mathematics

1) A 10 mL sample of HCl solution was transferred by pipet to an Erlenmeyer flask and then diluted by adding about 40 mL of distelled water. What is the approximate H3O+ concentration and pH of the solution in the flask before the titration begins? (approx concentration of HCl is 0.5 M)

2) Phenolphthalein indicator was added, and the solution in the flask was titrated with 0.215 M NaOH until the indicator turned pink (pH = 8-9). The exact volume of NaOH required was 22.75 mL. Use the following equation to calculate the concentration of HCl in the original 10 mL sample ==>

Mb x Vb = nMa x Va

Mb = molarity of standadrd base solution
Vb = volume of base added
n = mole ratio
Ma = unknown molarity of acid solution
Va = initial volume of acid solution

3) One student accidentally "overshot" the endpoint and added 23.90 mL of 0.215 M NaOH. Is the calculated concentration of HCl likely to be too high or too low as a result of this error? Why?

please help ASAP! thanks so much!

2007-10-03 09:24:52 · 1 answers · asked by KatieLC91 1 in Chemistry

You can only use ONE sheet of standard white paper and ONE 2 inch piece of tape.

2007-10-03 09:24:45 · 5 answers · asked by α ρℓα¢є ¢αℓℓє∂ мєℓαи¢нσℓу . 6 in Engineering

I need this for class

2007-10-03 09:23:37 · 4 answers · asked by lisak 1 in Mathematics

A 2.00 kg block is held in equilibrium on an incline of angle = 60° by a horizontal force applied in the direction of the increasing incline. If the coefficient of static friction between block and incline is µs = 0.300, determine the following.:


(a) the minimum value of force/vector F: ____ N
(b) the normal force exerted by the incline on the block: ____ N


Would somebody kindly show me how to do this, step by step, and show your work and the answer? I'm stuck.

2007-10-03 09:23:36 · 1 answers · asked by justme 4 in Physics

In the picture below, same objects have the same weight and different objects have different weights. Scales A, B, and C give the total weight in pounds for the objects above them. How many pounds does one cube weigh?
click below for the picture:
http://img443.imageshack.us/my.php?image=mathiq6.png

2007-10-03 09:19:23 · 2 answers · asked by Elizabeth S 1 in Mathematics

2007-10-03 09:18:45 · 1 answers · asked by tdabbott1975 1 in Zoology

2007-10-03 09:17:29 · 9 answers · asked by YVONNE W 1 in Chemistry

2007-10-03 09:16:05 · 10 answers · asked by Jaycie 3 in Geography

2007-10-03 09:15:51 · 1 answers · asked by tdabbott1975 1 in Zoology

I believe that time is not infinite. It is mearly a concept devised by man as a way of recording and tracking the events of the pass. If every thing was wiped uot and nothing existed then there would be no events to record...thus the end of time.Time would not go on if there was nothing because there would be no one to record that period of nothingness... wich is why time began with the big bang(says man) because no one can even guess what the univerce was like befor then.

2007-10-03 09:12:17 · 10 answers · asked by Anonymous in Astronomy & Space

2007-10-03 09:11:05 · 11 answers · asked by lez l 1 in Weather

3x - 5y = y - mx

Would just like to check answer (and workings if poss) to see if I got the correct answer

2007-10-03 09:10:33 · 5 answers · asked by Ella B 2 in Mathematics

In an inertial frame two particles are shot out simultaneously from a given point, with equal speeds v, in orthogonal directions. What is the speed of each particle relative to the other?

2007-10-03 09:10:15 · 3 answers · asked by KPL 1 in Physics

Let's say your textbooks have a total mass of 3.0kg. What would the mass of the books be if they were taken to Jupiter where the acceleration due to gravity is 10 times that of Earth?

2007-10-03 09:06:48 · 9 answers · asked by Anonymous in Physics

need fast very important

2007-10-03 09:06:38 · 6 answers · asked by mehranajaz 2 in Other - Science

A physics book slides off a horizontal table top with a speed of 1.05 . It strikes the floor after a time of 0.370 . Ignore air resistance.

-Find the height of the table top above the floor.
-Find the vertical component of the book's velocity just before the book reaches the floor.
-Find the magnitude of the book's velocity just before the book reaches the floor.
-Find the direction of the book's velocity just before the book reaches the floor.(an angle)

I found the horizontal distance from the edge of the table to the point where the book strikes the floor to be 0.389 m, and the horizontal component of the book's velocity to be 1.05m/s

but i can't figure out the rest....please help

2007-10-03 09:03:35 · 2 answers · asked by sandymandy 1 in Physics