Physics - August 2006

Jillian angrily throws her engagement ring straight up from the roof of a building, a height h above the ground with an initial speed of v, For the motion from her hand to the ground, what is the magnitude of the average velocity of the ring? What is the direction of the average velocity of the ring? For the motion from her hand to the ground, what is the magnitude of the average acceleration of the ring? What is the direction of the average acceleration of the ring? In how many seconds after being thrown does the ring strike the ground? What is the speed of the ring just before it strikes the ground?

2006-08-29 13:15:41 · 1 answers · asked by chemgurl85 2

it is in 9th grade- integrated physics and chemistry

2006-08-29 13:15:35 · 6 answers · asked by Kewl(#!( 1

its 9th grade. integrated physics and chemistry

2006-08-29 13:00:32 · 5 answers · asked by Kewl(#!( 1

its 9th grade integrated physics and chemistry

2006-08-29 12:58:20 · 7 answers · asked by Kewl(#!( 1

Wasn't quite sure if this was the right place to put this question, but I think I'm in the right ballpark, at least.

Now, the answer to this question doesn't have to be that realistic (but let's not involve, say, magic or fairies, 'kay?), but if you fell full-distance from an airplane onto some sort of surface, what kind of padding (and how much of it) would you have to have on the ground in order to survive? Or is survival possible at all? I ask this because I know that even relatively non-solid surfaces (such as sand or water) would have no cushioning effect whatsoever--from that height, there's little difference between those and concrete.

Thanks!

2006-08-29 12:43:06 · 16 answers · asked by Qchan05 5

or give me some description about it

2006-08-29 12:42:55 · 1 answers · asked by Anjo 1

Would the car's energy bring out force throughout the parking lot with cars around it?

2006-08-29 12:39:38 · 4 answers · asked by hope_lromantix 1

it is about behavior of gases.it is in 9th grade (integrated Physics and Chemistry)

2006-08-29 12:39:06 · 6 answers · asked by Kewl(#!( 1

2006-08-29 12:28:34 · 8 answers · asked by K A 1

Each of the vertebrae forming your spine is separated from its neighbors by disks of eleastic tissue. What happens, then, when you jump heavily on your feet from an elevated position? Why are you a little taller in the morning than you are at the end of the day?

2006-08-29 12:07:22 · 6 answers · asked by MegN 1

If and when the Earth wobbles from Polaris to Vega (Stars) will it change the magnetic fields?

2006-08-29 11:57:24 · 7 answers · asked by CLIVE C 3

I'm stumped on how to go about answering this question. It is from a chapter in my Physical Science book dealing with Newton's Laws of Motion...

Why is a massive cleaver more effective for chopping vegetables than an equally sharp knife?

2006-08-29 11:57:13 · 5 answers · asked by MegN 1

2006-08-29 11:36:39 · 8 answers · asked by icenilady 1

Maybe you Can Direct me to an Answer (Hopefully Very Very Elementary). I Have Wondered [this] for Many Years, if Light From [a Source] Was Positively Doppler Shifted [(Blue Shifted)], Where Does this Extra Energy Come From?

Is There Some Simple Expaination that I Have Overlooked?

2006-08-29 11:36:22 · 4 answers · asked by Anonymous

Helium balloons tend to dissipate helium and the ballon eventually loses bouyancy.

Is there a fabric, material, membrane that will keep Helium inside the balloon for very very long times ( years ) ?

2006-08-29 11:01:58 · 5 answers · asked by Technotron 2

Do particles and antiparticles have same half-life and stability?

Electron is v stable. Is positron equally stable with the same half-life? Is the anti-proton equally stable as the proton?

Of course we assume that the antiparticles are well confined and they do not come in contact with their counterpart and annhilate.

Has the half-life of positron been measured independently?

2006-08-29 11:01:19 · 6 answers · asked by Anonymous

2006-08-29 11:00:28 · 3 answers · asked by jarrett e 1

Since I passed a long tunnel, my compass doesn't work anymore! What's the reason.

Important: It already happened 2 times.

2006-08-29 10:33:05 · 2 answers · asked by Anonymous

a) 1.58
b) 0.79
c) 0.60
d) 0.40

2006-08-29 10:26:53 · 3 answers · asked by dodido 3

a) radio waves sound better
b) in a vacuum radio waves travel slower than light waves
c) radio waves cannot be reflected
d) radio waves have a longer wavelength than light.

2006-08-29 10:22:30 · 7 answers · asked by dodido 3

a) Only momentum is conserved
b) Only energy is conserved
c) Both energy and momentum is conserved
d) Neither energy and momentum is conserved

2006-08-29 10:21:32 · 4 answers · asked by dodido 3

how much bigger? A little or a lot?

2006-08-29 10:16:28 · 9 answers · asked by john 2

Something to do with electricity possibly. Something interesting. I'm in 8th grade and would greatly appreciate some ideas!

2006-08-29 10:02:34 · 3 answers · asked by JP 1

I have bought a magnetic hematite bracelet and now I am trying to find more info about the stone. It is a bit difficult to find an answer on line. If hematite is artificially magnetized (as far as I understood) and in nature it is not magnetic or has very weak magnetic property, for how long will the magnetism last? It cannot last forever. Unfortunately I didn't ask the seller at the time. Anybody knows?

2006-08-29 09:58:37 · 3 answers · asked by Tanya N 1

2006-08-29 09:56:21 · 1 answers · asked by emulakandov 2

clearly, a gas turbine can only produce as much thrust in terms of energy as is contained in the kerosine it consumes.

if, alternatively, electric energy was used: 1- if electric energy 'was' abundantly available, how would a set of electromotors generate thrust if they had no compression chambers? how would you simulate such a device for electric engines? 2- How heavy would this device + the engines need to be as a rough estimate (see sample settings at the end) ? 3- what would need to be the charge density of the battries used if, by weight, they had to remain within 200% of the weight of kerosine? Let's say this would be for a one hour trip, 2,500 gallons, and the thrust produced would be 10K pounds. please adjust numbers if they seem off to you. Thank you.

2006-08-29 09:55:36 · 7 answers · asked by blashgari@sbcglobal.net 2

graphing question?

go to http://www.xanga.com/phobodobo29... look under the entry GRAPHING PROBLEM
can someone please tell me how to solve it-I have attempted many times but cannot figure it out. just tell me a, b, c, or d, and how u did it. im not just looking for the answer but the method to do it

2006-08-29 09:48:04 · 4 answers · asked by maconheira 4

Can anyone tell me a good way to have a European tour for physics students studying "Alternative Energy Sources"

2006-08-29 09:34:50 · 2 answers · asked by supercalofragilistic 3

Is it possible to trap light in a box of perfect mirrors?

and also a side question how would you know that you did it.

2006-08-29 08:46:56 · 11 answers · asked by Jun 2

I would like for any accredited scientist to answer. I am very interested in this project, but the information regarding it is extremely hard to ascertain for a layman.

2006-08-29 08:34:34 · 4 answers · asked by bc_munkee 5