Science & Mathematics - 11 October 2007

I need the domain and range of the inverse. Help.

2007-10-11 13:23:16 · 2 answers · asked by ionu113 1 in Mathematics

Each having a spring constant of 5000 N/m
A 41kg person jumps from a 1.9m platform onto the innersprings.
the accel of gravity is 9.8m/s^2
assume the springs were initially unstretched and that they stretch equally .

Determine the stretch of each of the springs.

2007-10-11 13:21:48 · 1 answers · asked by michael 1 in Physics

its ugly

2007-10-11 13:20:35 · 3 answers · asked by stuie 3 in Earth Sciences & Geology

1.An object that weighs 50-N is in free fall.

a. What is the net force on this freely falling object?

b. What is the net force when the object encounters 15 N of air resistance?

c. What is the net force when it falls fast enough to encounter 50 N of air resistance?

2.The force of friction acting on a sliding crate is 120 N.

a. How much force must be applied to maintain a constant velocity?

b. What will be the net force acting on the crate?

c. What will be the acceleration?

3.A 15.9-kg mass on a horizontal friction-free air track is accelerated by a string attached to another 15.9-kg mass hanging vertically from a pulley as shown above. The masses are connected by a string, and move together as one unit.
(a)Since the track is frictionless, the weight of the hanging mass is the only force acting to accelerate the masses. What is their acceleration?
(b)Suppose the mass on the table is 7.95 kg, and the hanging mass is 31.8 kg. What is their acceleration? thx :]

2007-10-11 13:19:21 · 1 answers · asked by thinktank 2 in Physics

2007-10-11 13:16:05 · 4 answers · asked by Terri L 2 in Biology

2007-10-11 13:14:20 · 3 answers · asked by Terri L 2 in Biology

2007-10-11 13:13:36 · 2 answers · asked by Terri L 2 in Biology

Find the values of x and y, where x and y are real numbers.

(3x+2y) - y^3 i = 9-27 i

(^3= cubed, i = imaginary number)

Thanks in advance.

2007-10-11 13:13:33 · 2 answers · asked by Anonymous in Mathematics

2007-10-11 13:13:30 · 6 answers · asked by Anonymous in Mathematics

please explain the steps on how to factor this problem 5x squared-9x-2

2007-10-11 13:12:54 · 11 answers · asked by Unbiased Laker's Fan 4 in Mathematics

About two weeks ago, there was a bat on the floor of the library. It was unable to fly, so i pushed him into a box with one of my folders. People are telling be that i should go get a shot because I handled the folder....i just assumed it was bites you had to worry about. Is this ridiculous?

2007-10-11 13:12:17 · 10 answers · asked by The Dude 3 in Medicine

preferably brief description required

2007-10-11 13:09:59 · 2 answers · asked by ricka g 2 in Medicine

2007-10-11 13:09:56 · 5 answers · asked by Anonymous in Mathematics

Given: A(3, -7) and B(-9, 2). Write the component form of vector AB.

<12, -9>
<-12, 9>
<-6, -5>
<-5, -6>

2007-10-11 13:08:45 · 2 answers · asked by Anonymous in Mathematics

One number is 7 more than another. Twice the larger is 22 less than 4 times the smaller.

2007-10-11 13:07:25 · 6 answers · asked by persevere 2 in Mathematics

No seriously. I thought they were something different. I always considered bugs to have wings. LOL.

2007-10-11 13:07:10 · 10 answers · asked by Laura S 4 in Zoology

How much fuel was used to prevent the lunar module from crashing into the moon?

It is common knowledge that the moon has no atmosphere and has 1/6th earth gravity.

2007-10-11 13:05:03 · 5 answers · asked by asndude7 2 in Astronomy & Space

sorry all of you goofy boyfriend can not read report correct. but i think this is still pretty dangeroous right?

2007-10-11 13:04:40 · 7 answers · asked by jojo 1 in Medicine

So how do you figure out the radius of the circumcenter using perpendicular bisectors?

2007-10-11 13:04:32 · 1 answers · asked by AK.Inspire 3 in Mathematics

2007-10-11 13:03:09 · 7 answers · asked by ichigo 1 in Mathematics

Part of my biology lab in school. I need three ways and have 2 already. The 2 I have are that they are all used as energy and that they all are based off the same molecular formula (CH2O). I can't think of a third. Help please!

2007-10-11 13:00:55 · 3 answers · asked by Jake! 3 in Biology

turn brown and fall off the trees? I've heard all the stuff about trees not gettting enough oxygen, but what I want to know is why some leaves turn colors or red, orange, green, ect and some don't?

2007-10-11 12:59:54 · 1 answers · asked by Mrs J 6 in Botany

In the next couple hundred years?

2007-10-11 12:58:50 · 9 answers · asked by stuie 3 in Astronomy & Space

2007-10-11 12:55:21 · 5 answers · asked by Anonymous in Other - Science

Two kinds of milk, which have butterfat contents of 1% and 3.5%, are to be mixed together. How many liters of each kind are needed to produce 10 liters of low-fat milk (2% butterfat)?

2007-10-11 12:55:18 · 4 answers · asked by Anonymous in Mathematics

its for the science fair!
help!!

2007-10-11 12:55:18 · 5 answers · asked by just me ♥ 2 in Other - Science

If your family line is not naturally muscular and you started to work out and build muscle, then you had a kid would he inheret bigger muscles from you or would he be the same as your ancestors?how many generations would it take for offspring to develop bigger muscle naturally ?
I am using the muscle example because it is something we can control as opposed to other things like skin color etc.

2007-10-11 12:54:40 · 3 answers · asked by J's leather emporium 3 in Biology

2007-10-11 12:53:25 · 5 answers · asked by Anonymous in Earth Sciences & Geology

name,date of birth and others

2007-10-11 12:48:53 · 1 answers · asked by Anonymous in Astronomy & Space

find all zeros of the polynomial

p(x)=x^3-3x^2-9x-5

i found two of the 3 zeros and i got -1 and i know that is right but i seem cant to find the last zeros please find it for me

2007-10-11 12:47:23 · 3 answers · asked by star baller 360 5 in Mathematics