Physics - September 2006

IF a plane flies at 200.0 km/h w/ respect to the air. what is the velocity of the plane relative to the ground if it flies with:
a. a 50-km/h tailwind?
b. a 50-km/h head wind?d


if you don't want to give me the answer? i understand but can you tell me how to do it and how to draw it?

2006-09-05 15:23:11 · 6 answers · asked by Sheyna 1

[1]When a substance burns, matter is __________.
[2]Thompson's experiments led to the discovery of the __________.
[3]Most of the mass of an atome is found in its ____________...A)nucleus...B)electron cloud...C)atomic number
[4]Isotopes can have the same ____________.
[5]A pillowcase full of Halloween candy is a _______________ mixture.
[6]The compund ammonia contains three atoms of hydrogen for every atom of nitrogen, so the chemical formula for ammonia is _________.
[7]Chlorine-35 and chlorine-37 have a different number of _________.

2006-09-05 15:16:05 · 9 answers · asked by Anonymous

Ok, that should weed out most people.

I have a question for you. I am a math teacher, and got involved in a discussion with a physics teacher today after school about cosmology. The topic turned to the physical construction of strings. He maintained that a string is nothing short of a piece of spacial fabric that may have been pinched off from space fabric proper, and formed a string independently. I think he is full of bull, but in my recreational reading on string theory I have not come across much about what strings really are. I'm aware of the basic theory, how the vibrational patterns form the various bits of matter that we are aware of as the string winds it's way through multi-diminsional space.

I realize that most of this is speculative theory, but is there any convincing argument as to what a string actually might be constructed of? Or the origins of strings, if they exist?

2006-09-05 15:11:26 · 5 answers · asked by powhound 7

How does the resultant displacement change as the angle between two vectors increases from 0 to 180??? huh?????????????

i keep getting confused between displacement and vector and scalar? any way you can help me distinguish?

2006-09-05 15:00:04 · 3 answers · asked by Anonymous

Ok...
What is the largest possible displacement resulting from 2 displacements with magnitudes of 3m and 4m? What is the smallest possible resultant? draw sketches to demonstrate your answers...

Ok... I got the smallest possible resultant...But what's a displacement and how do you solve that???

10 points!

2006-09-05 14:56:31 · 5 answers · asked by Twilight Is Love 1

When you touch a live wire you get shocked. I want to know which of AC or DC tends to keep you stuck to the conductor.

2006-09-05 14:37:41 · 5 answers · asked by gagan 1

I'm confused...

When the ocean tide is unusually high, will the following low tide be unusually low also?

2006-09-05 14:37:40 · 5 answers · asked by Anonymous

Why does the rate of evaporate of acetone increase when air is bubbled through it. What links are there to prove it?

2006-09-05 14:17:34 · 4 answers · asked by ghostrider.com 2

I seem to recall a scene in Indiana Jones where he uses a lift raft and skiis down the mountainside. Is this realistic at all, what if one themselves fell against a steep slope in a similiar manner is survival possible? Has anyone ever survived such a fall?

2006-09-05 14:12:22 · 16 answers · asked by Andy S 6

Aah...please help. I have a feeling this is a suckers' question...if an object is traveling at a constant velocity, wouldn't acceleration equal zero? Since average acceleration= change in velocity/change in time...well, if velocity is constant, the change in velocity is zero, and 0/change in time= 0. I'm rather confused now, though. Help, please?

2006-09-05 13:56:52 · 13 answers · asked by aequitas702 1

I know of Celcuis and Fahrenheit. Whats the third?

2006-09-05 13:49:02 · 15 answers · asked by Lord Draven 2

2006-09-05 13:46:37 · 14 answers · asked by Baby Girl 4 Chris Maurice Brown? 1

2006-09-05 13:46:34 · 7 answers · asked by Anonymous

At this place queer observations are made and explained defying the usual principles of gravity and experience. How is it understood or is it only a Hoax ..an eyewash?

2006-09-05 13:38:57 · 5 answers · asked by gnparvate 2

I was wondering....

Since the earth's gravity is so much stronger than the moon's gravity, why can't rocks on the moon be dropped from the moon to the earth?

2006-09-05 13:37:10 · 10 answers · asked by Anonymous

Such a rainbow was reported by a traveller in her book .What is the physical explanation?

2006-09-05 13:32:49 · 11 answers · asked by gnparvate 2

2006-09-05 13:27:33 · 4 answers · asked by Anonymous

Ok, here's the question....
"Is the force of gravity stronger on a crumpled piece of paper than it is on an identical piece of paper that has not been crumpled?"

If I had to guess, I'd say it's the same on both, but I could be wrong. Can anyone help explain this to me if I'm wrong?

2006-09-05 13:27:29 · 11 answers · asked by MegN 1

thats not online but at a freaken store im so upset I have a lab due tomorrow and I need one!!! ahhhhhhhhhhh!! help me!

2006-09-05 13:19:37 · 5 answers · asked by szep_susan 2

Can anyone help me think of a physics lab that is not too complicated something that would have tools a high school might have for measuring. That involves the topic of weightlifting/fitness. I cannot have it be TOO simple because it needs to be a major project but I need to measure something and have many people test it and have insturments to measure the variable. i REALLY appreciate it thank you!

2006-09-05 12:51:21 · 1 answers · asked by Ahmed 2

We exist in a continual NOW, for the past moment is as dead as Pharaoh. our next experience simply awaits our arrival.

2006-09-05 12:47:54 · 38 answers · asked by lordofthetarot 3

2006-09-05 12:20:28 · 6 answers · asked by Anonymous

Physical significance would be nice, and cartesian components if possible. Perhaps there's an identity I'm missing that would shed some light on the situation.

2006-09-05 12:01:48 · 3 answers · asked by Sean43243234 1

2006-09-05 11:41:37 · 27 answers · asked by Anonymous

Say I was dropping twinkies off the stairs (don't ask), and it took them 1.3 seconds to drop 8.31 meters. And they broke after the third drop, how much force can they take?

2006-09-05 11:25:05 · 4 answers · asked by Picard Facepalm 5

2006-09-05 11:13:55 · 3 answers · asked by clive 2

2006-09-05 11:09:46 · 6 answers · asked by Anonymous

No more metal objects in the room

2006-09-05 10:29:40 · 21 answers · asked by Anonymous

If magnetic material can retain it's magnetic properties indefinitely then why couldn't this be harnessed to produce energy?

2006-09-05 10:03:01 · 3 answers · asked by Anonymous

2006-09-05 09:46:43 · 40 answers · asked by smeth 2