Science & Mathematics - 27 December 2006

A trapezoidal piece of plywood is used in a stage decoration.
Find its area if the bases are 80 cm and 140 cm, and its altitude is 50 cm.

2006-12-27 23:59:51 · 5 answers · asked by Hybrid Angel 2 in Mathematics

2006-12-27 23:57:57 · 3 answers · asked by Anonymous in Mathematics

2006-12-27 23:57:35 · 10 answers · asked by DAVE 6 in Astronomy & Space

2006-12-27 23:53:47 · 21 answers · asked by Anonymous in Astronomy & Space

Favorite Snacks of the students

Boiled Banana - 34 students favorite snack
Bread - 79 students favorite snack
Cookies - 47 students favorite snack
Fruits - 40 students favorite snack


What percent of the students chose boiled banana as their favorite snack?

2006-12-27 23:52:18 · 9 answers · asked by Hybrid Angel 2 in Mathematics

2006-12-27 23:52:10 · 6 answers · asked by Anonymous in Biology

Favorite Snacks of the students

Boiled Banana - 34 students favorite snack
Bread - 79 students favorite snack
Cookies - 47 students favorite snack
Fruits - 40 students favorite snack


What percent of the students chose boiled banana as their favorite snack?

2006-12-27 23:51:11 · 4 answers · asked by Hybrid Angel 2 in Mathematics

2006-12-27 23:50:47 · 6 answers · asked by styles4u 4 in Mathematics

2006-12-27 23:48:10 · 6 answers · asked by Anonymous in Zoology

It says that you have to create Magic Squares using only intergers of -4 up to 4 so that all rows.. columns and sqaures add up to the sum of 0. Now there are three rows across and three rows down. 9 total. Please help

2006-12-27 23:46:47 · 6 answers · asked by CSIGrandma 2 in Mathematics

2006-12-27 23:40:55 · 4 answers · asked by Mathura G 1 in Weather

2006-12-27 23:40:31 · 5 answers · asked by Mathura G 1 in Weather

A rectangular lot, 12 metres long and 8 metres wide, is to be enclosed by a fence with posts 4 metres apart. If each post costs $75.00, how much would be spent for all the post?

2006-12-27 23:33:33 · 9 answers · asked by Hybrid Angel 2 in Mathematics

2006-12-27 23:30:52 · 9 answers · asked by Antonio 1 in Earth Sciences & Geology

What are stem cells? And what have they got to do with cloning? But please nothing to complicated.

2006-12-27 23:17:30 · 5 answers · asked by Anonymous in Biology

plz deteal me . other planet moving round the sun but no goes on sun? while sun gravational feald act on planet in solar system

2006-12-27 23:15:21 · 14 answers · asked by Anonymous in Astronomy & Space

Will they teach it in schools?
How big will it get?

2006-12-27 23:12:10 · 4 answers · asked by silvs 5 in Other - Science

2006-12-27 23:11:35 · 10 answers · asked by Ghavinn V 1 in Astronomy & Space

Some constants 0, 1, i, e, and Pi have many important and unique properties. What are these numbers? How are the related to eachother? How did they develop in the history of mathematics?

2006-12-27 23:11:35 · 2 answers · asked by diesel_478 2 in Mathematics

2006-12-27 23:05:53 · 7 answers · asked by GEORGIA M 1 in Geography

I heard it was 'Istebna' but I'm not sure.

2006-12-27 22:55:17 · 1 answers · asked by Anonymous in Earth Sciences & Geology

What is the difference between an atom and an ion? Ion has net electric charge. So it shows electric property. It acts like a small charged ball. What about an atom? Does it behave as a neutral object?
Atom has equal number of protons and electrons bind together in the space. For this it is said to be electrically neutral. But electric field is a vector quantity, so equal number of positive and negetive charges doesn't essentially cancel out the effect of each other.
Let's take hydrogen atom for example. It has an electron that is orbiting around a proton. At any instance of time, there is a point between this two charged particle that is neutral (according to couloumb's law). But as a whole this system will have net electric property. So a hydrogen atom should behave like a charged object rather than being neutral.
Actually the nature of electric force (static) is such that charges distributed in space (like or unlike), always creates an electric field.

2006-12-27 22:50:19 · 5 answers · asked by Anonymous in Physics

My sir asked us to find out the answer for this question. i just want to know the perfect reason. Pls find this for me.

2006-12-27 22:40:39 · 7 answers · asked by Anonymous in Astronomy & Space

2006-12-27 22:32:34 · 2 answers · asked by fahad a 1 in Engineering

When water molecules form hydrogen bonds, when condensing from water vapour to liquid water for example, they give up energy in an exothermic reaction. What exactly is it about the molecules that is the cause of the energy release? Is it a change in the electrons bound to the hydrogen and oxygen atoms that are involved in the bonds? Do they jump to lower energy levels and give off energy as photons? Or is it another mechanism?

2006-12-27 22:29:15 · 5 answers · asked by kooky45 1 in Chemistry

2006-12-27 22:29:07 · 12 answers · asked by Anonymous in Biology

Two children earned $245.00 for selling newspapers. They divide this money the ratio 4:3. How much is the smaller share?

2006-12-27 22:26:20 · 10 answers · asked by Hybrid Angel 2 in Mathematics

2006-12-27 22:22:13 · 13 answers · asked by pavi 1 in Geography

2006-12-27 22:15:33 · 2 answers · asked by kirti s 1 in Mathematics

2006-12-27 22:14:52 · 2 answers · asked by Mike 3 in Medicine