Science & Mathematics - 3 November 2006

"R" is the midpoint of line segment "PT", nd "Q" is the midpoint of line segment "PR". If "S" is a point between "R" and "T" such that the length of segment "QS" is 10 and the length of segment "PS" is 19, what is the lenght of segment "ST"?




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Please provide the solution...

2006-11-03 09:56:05 · 9 answers · asked by Anonymous in Mathematics

problem 1:
A ball on the end of a string is cleverly revolved at a uniform rate in a vertical circle of radius 75.0 cm. Its speed is 4.00 m/s and its mass is 0.300 kg.

(a) Calculate the tension in the string when the ball is at the top of its path.
________ N
(b) Calculate the tension in the string when the ball is at the bottom of its path.
_______N



problem 2:
A 970 N crate rests on the floor.
(a) How much work is required to move it at constant speed 6.7 m along the floor against a friction force of 180 N?
________ J
(b) How much work is required to move it at constant speed 6.7 m vertically?
________J

2006-11-03 09:55:54 · 4 answers · asked by tigerlilly 2 in Physics

Plz help me to "resolve following into factors"

Q1: 4a²+12ab+9b²
Q2: 9x² - (2x-3y)²
Q3: (a+b-c)² - (a-b+c)²

Plz help me. tomorrow is my test.

2006-11-03 09:55:07 · 4 answers · asked by Cool 1 in Mathematics

2006-11-03 09:54:54 · 10 answers · asked by ikandy 2 in Weather

A copy machine can print 125pages in 3min. How many it'll take to print 800pages?
Another good brain question... can you solve it and explain?! Good answer will be selected as best anwser and get 10points!

2006-11-03 09:49:59 · 10 answers · asked by curious_Me 1 in Mathematics

GCSE level ansers

2006-11-03 09:47:30 · 4 answers · asked by sabrina 3 in Physics

56/25......77/25.....19/5........32/5...... gosh i feel stupid..

2006-11-03 09:47:02 · 4 answers · asked by Kayla S 1 in Mathematics

Is there someplace south where many flocks of birds suddenly appear in the winter? I know it sounds silly, but where do they go?

2006-11-03 09:46:27 · 24 answers · asked by Anonymous in Zoology

2006-11-03 09:46:22 · 10 answers · asked by Anonymous in Medicine

equation:
sqrt (2x-4) + 2 = sqrt (3x+4)

do i need to square both equations then move the 2 or vice versa?

equation:
2x^2 + 1 = 1- x

do i need to move the one over then square the equation or vice versa?

thanks.

2006-11-03 09:43:37 · 3 answers · asked by shih rips 6 in Mathematics

Please help me To find (meaning not if you don't know but if you do know) NON (being the key word) NON Monarch Butterfly Photo Websites. I know they have them. Its just that they don't come up the way that i'm asking for. They are smaller then the monarch butterflies. And its a Orange and black butterfly. Thank you very much for your time.

2006-11-03 09:40:06 · 9 answers · asked by jrealitytv 6 in Zoology

A BBC2 gardening TV programme said that if you keep plants close together in a cold greenhouse they will keep each other warm.

2006-11-03 09:39:21 · 6 answers · asked by toecee 6 in Botany

I started thinking about this as the hours of daylight are decreasing due to the approach of winter. As you move north (or south) of the equator, towards the poles, during the time approaching the winter equinox, there are fewer hours of daylight each day. Here in NY, for example, on Dec. 21, there are roughly 6 hours of daylight. However, at the north pole, there are 0 (zero) hours of daylight.
My question is, as you move away from the equator, is there some linear (or non linear) relationship between the distance from the equator and the number of hours of sunlight? For example, say on Dec. 21 there are 12 hours of sunlight at the equator, if you travel 1000 miles north of the equator, how many hours of sunlight will there be? Is there some equation that expresses, for N miles from there equator, there will be Y hours of sunlight per day? Does this equation change as we approach the winter equinox, or is it constant from one day to the next?

2006-11-03 09:38:28 · 3 answers · asked by 2007_Shelby_GT500 7 in Geography

where is protease find in body?is it in stomach?where do the proteins we eat get broken down?

2006-11-03 09:36:58 · 5 answers · asked by Anonymous in Medicine

ok im really confused is ionic the one that is composed of nonmetals and metals or is it the molecular?

in this case is NaH molecular, ionic, or what>? and what is an acid?? when is it that you put the prefixes b4 the name?

2006-11-03 09:32:21 · 3 answers · asked by im M 1 in Chemistry

Not my homework... but a page that i got from this brain excerise book... i think is good for us to practice and excerise our brain with numbers ;) solve and explain ;)

2006-11-03 09:30:13 · 6 answers · asked by curious_Me 1 in Mathematics

Ok I have to figure out what 1 pound and 2 ounces is in a fraction for my math project can you help me???

2006-11-03 09:26:40 · 4 answers · asked by blue_angel_lover_girl 1 in Mathematics

I'm not talking about minor variations such as blue and green. I'm saying if you see blue, could someone else see your blue as orange.

You can tell that I'm not a science major. I had this question as a child and never got a good response. This question just came out of nowhere!

2006-11-03 09:23:51 · 13 answers · asked by Anonymous in Other - Science

Fluid pressure??? I need to solve this problem:
The scuba diver went 15 m deep. what is the fluid pressure?

2006-11-03 09:20:29 · 5 answers · asked by Anonymous in Physics

Do you know if professional engineers have a organization that I can contact?

2006-11-03 09:17:14 · 9 answers · asked by Anonymous in Engineering

I know that the mosquito causes the most deaths, even though this is just through spreading disease, not because of the mosquito itself, but I want to know what animal kills the most people worldwide

2006-11-03 09:16:31 · 12 answers · asked by Kevin 4 in Zoology

I know there is some kind of formula using how wide and long the room is, but need to know how to use it...

2006-11-03 09:14:08 · 3 answers · asked by J P 1 in Engineering

Three people each toss a penny at the same time. What is the probability that two people get the same side of the penny and the other person gets the opposite side?

2006-11-03 09:14:03 · 10 answers · asked by Felicia F 1 in Mathematics

2006-11-03 09:13:27 · 2 answers · asked by Anne 1 in Chemistry

2006-11-03 09:11:59 · 10 answers · asked by Anonymous in Botany

also if the egg was left in the nest would it become a chicken?

2006-11-03 09:11:52 · 12 answers · asked by berkeleyqueer 2 in Zoology

Can you solve and exlpain... I'll choose the best answer... if you do good... lol... good try... and time to let the brain excersie ;)

2006-11-03 09:10:48 · 5 answers · asked by curious_Me 1 in Mathematics

2006-11-03 09:10:46 · 3 answers · asked by Anonymous in Astronomy & Space

i dont understand the full moon half moon thing when its a half moon is there something in its way if its all clear shouldent it be a full moon all the time

2006-11-03 09:08:23 · 17 answers · asked by andrewthart 1 in Astronomy & Space

You also have trees that are male/female and I know about genes and all that stuff but it makes you think, do they hurt and do they have feelings ect.
I sound a bit like a hippy I know but it has always bugged me.

2006-11-03 09:06:41 · 5 answers · asked by Steven W 3 in Botany