Science & Mathematics - 4 October 2006

Last spring, I looked out the window and saw a nest on the ground, it appeared to have fallen out of a tree. Soon, I saw a robin fly down to the nest and begin picking at it rather frantically. Finally, the robin picked a moving object the size of a baby bird and flew away. Most people tell me this never happens, but a 98 year old woman tells me, yes, birds can pick up their young. Has anyone else ever seen this happen?

2006-10-04 07:22:09 · 6 answers · asked by cancelcodeyellow 3 in Biology

please explain the answer too, thanx

2006-10-04 07:21:04 · 3 answers · asked by BMac 3 in Mathematics

A 6.5 kg particle starts from rest a x = o and moves under the influence of a single force
Fx = 6.1 + 7.6x - 1.1x^2, and Fx is n Newtons and x is in meters.

Find the power delivered to the particle when it is at x = 2.2m. answer in W.

Find the work done by this force on the particle as the particle moves from x = o m to x = 2.2m. answer in J.

Keep getting different answers. Would the work done equal the change in kinetic energy? Then how would I find the power delivered?

2006-10-04 07:20:52 · 2 answers · asked by Dee 4 in Physics

2006-10-04 07:20:46 · 9 answers · asked by UtBuu 1 in Astronomy & Space

–8, 3, 29, 6, –16, –47

2006-10-04 07:20:06 · 15 answers · asked by Anonymous in Mathematics

2006-10-04 07:19:35 · 5 answers · asked by TPCAN 3 in Mathematics

2006-10-04 07:19:13 · 5 answers · asked by Guillardo 2 in Other - Science

2006-10-04 07:17:40 · 13 answers · asked by Anonymous in Mathematics

Please rank from smartest to dumbest.

2006-10-04 07:14:33 · 12 answers · asked by Anonymous in Zoology

How can you combine the four molecules on the left to form the one on the right?

http://ca.blog.360.yahoo.com/blog-LDLB08k9fqL4u3yfbggy

2006-10-04 07:13:05 · 2 answers · asked by Hard Rocker 3 in Chemistry

Ok I have a question...you don't need to answer but just help me understand it please; it's confusing and I'm wasting too much:

A destroyer is moving due north at 8.5 metres/second when a depth charge is catapulted off the side of the ship in a direction (North 35 degrees East) relative to the deck of the ship. What is the velocity of the depth charge relative to the water if the speed relative to the deck is 28 metres/second?

Ok, what the heck do they mean by destroyer? Also, they want the velocity of the depth charge...what's a depth charge?
If you guys could please just help explain this question, you'd be a really big help. Thanks

2006-10-04 07:11:32 · 4 answers · asked by A 2 in Physics

Hi, I have 3 sums, please note this symbol ^ means "to the power of"
1) Express the following in standard form 385
2) Express the following in ordinary decimal form 2.5 x 10^-6.
3) Evaluate, leavig you answer in standard form 1.765 x 10^ -3 - 5.47 X 10^-4

2006-10-04 07:09:00 · 12 answers · asked by Anonymous in Mathematics

2006-10-04 07:08:05 · 10 answers · asked by Anonymous in Astronomy & Space

I am having trouble finding the inverse of the function notation:

f(x)=x^2 + 4x - 3

Please help! I tried one way and it didn't work but I dunno what else to do!

2006-10-04 07:07:40 · 4 answers · asked by Anonymous in Mathematics

how can you grow a seedless grape when by definition it has no seed?

2006-10-04 07:05:16 · 7 answers · asked by okdude2004 1 in Botany

if space has a vacume why dont we get sucked into it through the hole in the ozone?

2006-10-04 07:03:05 · 6 answers · asked by okdude2004 1 in Astronomy & Space

2006-10-04 07:02:40 · 4 answers · asked by brandywine614 1 in Mathematics

does it depend on whether you are enclosed in something or not?

2006-10-04 07:00:51 · 14 answers · asked by Loopy loo 1 in Astronomy & Space

2006-10-04 07:00:08 · 13 answers · asked by brandywine614 1 in Mathematics

2006-10-04 06:58:29 · 6 answers · asked by rhianna t 1 in Weather

The first,"TACOMA NARROWS BRIDGE", just "two lanes", known around the entire world now as"GALLOPPING GERDIE".
The man who had the money to ,"insure", the first bridge, put the money in his pocket, as he was so sure the engineers had designed the perfect bridge.
Well obviously they hadn't.
The engineers did not design a way for the ,"strong winds", which are common in the ,"NARROWS STRAIGHT", to ,"flow through the decks". So the bridge went down in the first major storm it faced.
The new," NARROWS BRIDGE", has no ,"grated decks", or whatever.
I spoke to one of the, "foremen", on the westside, you know, just mentioned it to him.
I was making a delivery.
Anyway, he assured me, it would be a real big ,"boo-boo", (that was his terminology) and that ,"Engineers", had been designing the bride for many years...
So who can tell me...WHERE IS THE AIRFLOW, supposed to go, if not through the DECKS of the new BRIDGE???
Preferrably someone who knows about engineering.
T.Y.

2006-10-04 06:57:39 · 3 answers · asked by djyo 3 in Engineering

triangle numbers!!! okay...my numbers are 3m, 9m, and 18m, so why have i been told to use m, 2m, 3, 6m and 10m?????
help me pls!!

2006-10-04 06:56:20 · 5 answers · asked by big mama 2 in Mathematics

2006-10-04 06:55:13 · 3 answers · asked by brandywine614 1 in Mathematics

What is the value of morphological characterization in molds? and What are the advantages and disadvantages of preparing smears from solid and broth culture?

2006-10-04 06:53:59 · 1 answers · asked by cfwu00 1 in Biology

I have heard of a species called the Barbary Coast Lion.Are they exstint? If so, were they larger than the typical lion seen in Africa today? Did the males have a black mane? Please limit answers to those lions only living in Africa.

2006-10-04 06:52:33 · 2 answers · asked by dewhatulike 5 in Other - Science

Hiya, I'm soooooo terrible at maths and I really need help with a question. It's theta, which I know nothing about really.
If sin theta - 2 cos theta = 0 find tan theta
Thanks in advance,
~K x

2006-10-04 06:48:31 · 4 answers · asked by CremeEgg-x 1 in Mathematics

2006-10-04 06:47:59 · 19 answers · asked by Jed 1 in Chemistry

Two identical electric kettles are switched on at the same time. A contains 1 litre of water,and kettle B contains 0.5 litre of water.in both kettles the temperature of water is 20 degree C.the water in kettle A takes longer to reach boiling point than the water in kettle B.why??

2006-10-04 06:46:32 · 3 answers · asked by aleX 1 in Chemistry

Like what is the thickness?

2006-10-04 06:46:16 · 5 answers · asked by Anonymous in Engineering

2006-10-04 06:45:36 · 10 answers · asked by MM 1 in Earth Sciences & Geology