Science & Mathematics - 1 February 2007

2007-02-01 11:43:39 · 2 answers · asked by Jeanne L 2 in Zoology

Two circus clowns (each having mass of 50kg) swing on two flying trapezes (negligible mass, length 25m). At peak of the swing, one grabs the other, and the two swing back to one platform. The time for the forward and return motion in s is?

2007-02-01 11:41:45 · 1 answers · asked by Shane W 1 in Physics

A sheet of paper is 0.015 cm thick. Suppose you rip it in half, place the two halves together, and rip them in half. Then you place the four pieces you now have in a stack and rip the stack in half. If it were physically possible to continue this process of stacking the torn pieces and ripping the stacks apart for 50 times, the stack would have 250 pieces. How high would this stack reach? (Give your answer in meters.)

2007-02-01 11:41:31 · 5 answers · asked by mike 1 in Mathematics

2007-02-01 11:41:16 · 3 answers · asked by Godis! 3 in Engineering

With a TI-89 calculator, how would one solve this equation:

The volume of 1.5lb of XXX with a density of 0.879g/mL?

2007-02-01 11:40:58 · 1 answers · asked by James F 3 in Mathematics

If light (travelling at velocity v1=C) is bent upon entering a prism by being slowed down to v2

2007-02-01 11:40:37 · 10 answers · asked by ? 1 in Physics

2007-02-01 11:40:07 · 3 answers · asked by mark1313 1 in Biology

how do i convert 1.0L into mol

2007-02-01 11:39:48 · 2 answers · asked by Anonymous in Chemistry

I just want to be sure and my *cheap* calculators can't really help. right now I'm subtracting negative numbers from negative numbers. Or maybe someone can explain an easy way to do that? Here's one: -13 - -19

2007-02-01 11:39:45 · 6 answers · asked by Anonymous in Mathematics

Will life end when and if an asteriod hits Earth? What do you guys think about this? You do realize this is what killed the dinosaurs!!!!

2007-02-01 11:39:40 · 10 answers · asked by Robert 4 in Astronomy & Space

They are these weird multi-colored specks that disappear whenever you try to look at them directly. Supposedly they are your eye molecules or something, but where's your imagination?

2007-02-01 11:39:31 · 4 answers · asked by bambam7654 2 in Biology

This is a question of a job interview i had.
Could anyone tell me what does it really mean by trades processes.
its great If someone from engineering background can tell what would be your answer for this.

2007-02-01 11:39:11 · 1 answers · asked by rsd3k 1 in Engineering

How do I safely transport,store, and handle potassium chlorate? How about with potassium perchlorate?

2007-02-01 11:39:03 · 2 answers · asked by Sliceathroat 3 in Chemistry

A seagoing crane lifts a sealed safe from a sunken ship. The average density of the safe is 5.3 grams/cc and its mass is 120. kg. What is the tension in the lifting cable when the safe is still submerged?

2007-02-01 11:38:50 · 1 answers · asked by Shane W 1 in Physics

can anyone explain this question to me?

Evaluate a - b/ c - d for each set of values.

1). a = 6, b = 5, c = 8, d = 4

here what i thought how to solve them

6 - 5 / 8 - 4 = 1/ 4

is this rite?

2007-02-01 11:37:57 · 6 answers · asked by L0cA Ch!Ca 1 in Mathematics

He is my father! He is behind in child support

2007-02-01 11:37:09 · 3 answers · asked by acmccn215 1 in Geography

1.30 kilograms of water at 11.0C is placed on a heat source. The water's temperature is raised to 61.0C. How much heat is absorbed by the water?

How do you solve this?

2007-02-01 11:36:19 · 2 answers · asked by Lemonade is Good 5 in Physics

2007-02-01 11:35:49 · 29 answers · asked by lost1176 1 in Mathematics

is it because we dont need cell support like plants do?

2007-02-01 11:35:36 · 2 answers · asked by what? 7 in Biology

2007-02-01 11:34:25 · 5 answers · asked by Anonymous in Mathematics

If you fill a bath to the brim with yourself in it, would an identical bath with someone half your physical size, also filled to the brim, weigh the same as your own bath? Half my friends say yes and half say no!

2007-02-01 11:34:22 · 5 answers · asked by Anonymous in Other - Science

^ means squared and this / is the division sign

1.x^2-7x+12/x^2-x-6
2.x^2+6x+5/2x^2-x-3
3. 2x^2+5x-3/4x^2+11x-3
4.5x^2+9x-2/x^2+5x+65.7x^2+11x-6/x^2-4

2007-02-01 11:34:21 · 3 answers · asked by skymei20 1 in Mathematics

2007-02-01 11:33:45 · 7 answers · asked by J.T. 1 in Mathematics

I have a ti-89 left over from calculus in high school and I'm taking stats right now in college. Can u guys recommend a website that provides a thorough and helpful set of instructions for how to use a ti-89 for stats?

2007-02-01 11:32:30 · 5 answers · asked by Mikey C 5 in Mathematics

Chlorine is prepared industrially by passing an electric current through brine, a concentrated solution of sodium chloride.
2NaCl + 2H2O → 2NaOH + Cl2 +H2
All three products are commercially valuable. If 1500 g of a brine solution that is 24% NaCl by mass is used, how many grams of each product can be produced?

2007-02-01 11:32:27 · 2 answers · asked by San Fran Kid 2 in Chemistry

i need a website to look at or if u know it for cordova(cordoba) spain and athens greece and seoul korea just tell me that. i cant find anything so pls pls help! thank you!

2007-02-01 11:31:19 · 2 answers · asked by gigglegal 2 in Weather

I have to answer that question for science homework.

2007-02-01 11:30:20 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-02-01 11:30:07 · 13 answers · asked by Briyianne J 1 in Zoology

i did the problems i just need to know if i got them right...if i got any wrong...could u take me through the problem?

8*5 3/5=44 4/5
4*12 2/3=50 2/3
11*4 1/3=47 2/3
14*3 1/5=44 4/5
7*7 5/9=52 8/9

2007-02-01 11:29:13 · 5 answers · asked by ☀☁❄☀❄rawr 4 in Mathematics

2007-02-01 11:29:04 · 1 answers · asked by what? 7 in Biology