Science & Mathematics - 3 October 2007

2007-10-03 03:05:12 · 1 answers · asked by Surmit B 2 in Astronomy & Space

WHY??????????

2007-10-03 02:56:01 · 6 answers · asked by mikerob21 2 in Physics

1. find the distance bet. lines 3x + y -12=0 and 3x+y-4=0

2. find the distance bet. lines 7x-8y+12=0 and 7x-8y-8=0

3. A circle touches the lines 5x +2y-10=0. Find its area and the locus of its center

4. Two sides of a square are on the lines x+10y-5=0. Find the area of the square

5. The sides of a rectangle are on the lines x +5y-4=0, 5x-y+6=0, x+5y+8=0 and 5x-y+10=0. Find its area.

6. The sides of a parallelogram are on the lines x-3y
+20=0, x +y+6=0, x -3y-10=0 and x=y-2=0. Find its area.

7. The distance from a line to (6,2) is 3 units. The line is perpendicular to 4x +3y=8=0. Find its equation.

8. Find the equation of a line parallel to 5x =6y-10=0 at distance square root of 61 from (-3,7)

A moving point is always equidistant from (-3,2) and the line 2x-y-2=0. What is the equation of its locus?

10. find the equation of the bisector of the obtuse angle bet. the lines 4x+y6=0

find the equation of the bisector of the obtuse angle bet. the lines 4x+y+6=0 and 2x+8y-3=0.

2007-10-03 02:43:30 · 3 answers · asked by Danica F 1 in Mathematics

2007-10-03 02:40:31 · 3 answers · asked by ntisme 5 in Other - Science

The equation for coriolis force has no component for wind direction. The main component is the latitude. When moving due east or west there is no change in velocity on the surface of the earth between the origin and destination. Then does the eart's rotation have no effect at all?

2007-10-03 02:37:44 · 3 answers · asked by Anonymous in Weather

Why did they take pluto out as one as the planets? Do they not now how stupid thats is. Should they bring the planet back?

2007-10-03 02:37:15 · 8 answers · asked by Anthony l 3 in Astronomy & Space

2007-10-03 02:37:15 · 3 answers · asked by Anonymous in Earth Sciences & Geology

It's that time of year when geese fly elsewhere to avoid the British Winter.

But have wondered recently why do they fly in formation of a V?

Thanks

2007-10-03 02:31:38 · 9 answers · asked by davie 2 in Zoology

also the circumference.....thanks

2007-10-03 02:27:08 · 2 answers · asked by loverboy 1 in Earth Sciences & Geology

2007-10-03 02:25:22 · 8 answers · asked by puppy 1 in Other - Science

The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat?

2007-10-03 02:24:26 · 1 answers · asked by ? 1 in Physics

(a) the momentum is conserved, (b) there is zero net force acting on it, (c) equal distances are travelled in equal times, (d) only ther gravitational force is considered.

2007-10-03 02:24:23 · 2 answers · asked by akapo t 1 in Physics

2007-10-03 02:19:27 · 10 answers · asked by Autumn 2 in Astronomy & Space

I posted a question in the religious section about why Christians are allowed to sit out of the section on evolution in my 10th grade biology class when it's accepted science, and a lot of people said it's not.

I thought it was, and it's just the Christians who don't believe it. Are there non-Christians who don't believe in evolution? Is it widely accepted as sceince?

2007-10-03 02:18:09 · 16 answers · asked by Smee 1 in Biology

I saw a meteorite fall into a wooded area a few months back. No, it wasn't a shooting star, I actually saw the meteorite turn from red-hot to a cool dark color before it fell beneath the trees.

I've been scouring those woods for days trying to locate the space rock, but unsuccessfully. I have a pretty good idea where it landed by looking at two trees that appear to have been hit by the meteor, but that's about all I've got.

Is there an easy way to locate the space rock that I don't know about? It's been a few months so there isn't a crater, but I think I narrowed the location to within 100 sq ft. of it's actual location. Metal detector, maybe?

2007-10-03 02:17:28 · 2 answers · asked by The Guardian 1 in Astronomy & Space

If something that travels at the speed of light has infinite mass, then why not light and the rest of the electromagnetic spectrum ?

2007-10-03 02:14:54 · 5 answers · asked by John S2005 3 in Physics

a jumbo starting from rest needs to atain a speed of 350km/h on the runway to take off. can ths plane use a runway 1km long if it is to accelerate at the rate of 2.67m/s2?

2007-10-03 02:12:03 · 2 answers · asked by cara 2 in Physics

2. A swimmer slides freely from rest from the top of a water slide and reaches the bottom with a horizontal speed. He hits the water 4.6m from the slide 0.8 s later. Find the length of the slide.

4. A spring of force constant 1250 N/m is compressed 0.25m. A brick of mass 1.50 kg is palced on top of it. When the spring is released, how high will the brick go?

2007-10-03 02:11:05 · 1 answers · asked by Anonymous in Physics

2007-10-03 02:03:34 · 4 answers · asked by Fernandus T 1 in Weather

2007-10-03 01:56:56 · 4 answers · asked by Anonymous in Engineering

what happens to its cross-sectional area? if you double its diameter? does the resistance of the wire increase or decrease?

2007-10-03 01:52:07 · 3 answers · asked by Anonymous in Engineering

2007-10-03 01:51:43 · 8 answers · asked by widetrack 1 in Earth Sciences & Geology

2007-10-03 01:47:15 · 10 answers · asked by crystal g 2 in Medicine

longititude and latatude

2007-10-03 01:44:55 · 6 answers · asked by christy_b 1 in Earth Sciences & Geology

what is 10% of 5,202.89

2007-10-03 01:41:17 · 8 answers · asked by Trinity 1 in Mathematics

2. A trapezoid has bases of 7cm and 5cm and a height of 3 cm. What is its area?
3. A rectangle piece of paper has a width of 16 inches and a area of 192 square inches. What is its length?
4. A square garden has a side of 22 meters. How many meters of fence are needed to enclose the garden?
5. A chessboard has a area of 100 square inches. What is its perimeter?

2007-10-03 01:37:48 · 7 answers · asked by Rosemarie S 1 in Mathematics

2007-10-03 01:37:20 · 6 answers · asked by Anonymous in Zoology

2007-10-03 01:36:23 · 5 answers · asked by Freebrum 3 in Mathematics

I am having some difficulty proving the following equation of vertical motion of a rocket.

y=(Vexhaust * t) - (1/2g * t^2) - (m * Vexhaust * ln(m0 / m)) / k

Givin information:

F=trust-Fgravity

m(dV/dt)=Vexhaust(dM/dt)-mg

dM/dt changes at constant rate

dM/dt=-k

Therefore:

m=m0-kt

Thanks for the help. I've been working on this for 2 days.

2007-10-03 01:28:59 · 1 answers · asked by c1b3rnut 1 in Physics

In the house, if more and more appliances will be connected in parallel, what do you think will happen? Explain. Do you think this would be a good practice? why??

2007-10-03 01:19:46 · 2 answers · asked by Anonymous in Physics