Physics - July 2006

When they first came up with postclassical theories, the 4th Dimension had been discussed for decades and had degraded into a lot of wackiness. So Einstein and others were afraid to posit it.

Wouldn't 4D explain the quantum leap? To understand, reduce things to 3D: You're shuffling along the sidewalk in virtual 2D, but by lifting your foot and stepping into the 3D, you go from point A on the 2D sidewalk plane to point B without ever touching the line AB.

Also, gravity occurs when a particle sinks into 4D and, like a boomerang, collides at the dimensional interface with the object affected by the gravity and pushes it towards the other object.

2006-07-07 08:39:56 · 11 answers · asked by Anonymous

Can it happen in reality?

2006-07-07 08:28:51 · 7 answers · asked by Dhanashri 2

i have done it for 2 minutes and im starting to get wossy

2006-07-07 08:20:54 · 21 answers · asked by Anonymous

A science homework question: I know how electricity is conducted, but why are metals like silver and copper so good at it?

2006-07-07 07:56:06 · 11 answers · asked by Anonymous

2006-07-07 07:20:58 · 13 answers · asked by ancient_wolf_13 3

When you say "nothing", you are talking about something, but you still refer to it as nothing. But even though it is nothing, it still takes up space, so would nothing be an actual form of matter, or would it still just be the absence of space?

2006-07-07 07:18:00 · 10 answers · asked by Anonymous

I have an elevation opening of size 7X5 square foot,which is nearly at 10 feet above from ground. The air velocity will be around 30Kmph. If I cover that gap with a glass of 8 mm thickness, will the glass can withstand by the pressre exerted by wind flow of 30kmph? How to calculate the force on glass of 35 square feet, by wind with speed 30kmph.

2006-07-07 07:17:07 · 2 answers · asked by phaneendra_50 1

In a 1-g field, it would be hard to hit a ball made of solid metal very far. Would it be different in lower gravity? I'm thinking yes, but want to make sure. And I guess I'd have to have a solid metal bat, too, right? Even in lower gravity, I'd think hitting a metal ball would splinter a wooden bat.

By the way, thanks everyone for the great answers yesterday to my other question.

2006-07-07 06:55:53 · 10 answers · asked by MissNormaD 1

First person to answer science questions correctly will get 20 poins?
NOTE THIS IS NOT MY HOMEWORK. SCHOOL FINISHED TWO WEEKS AGO FOR ME. I JUST WANT TO SEE WHAT OTHER PEOPLE GET. I GOT A 7 OUT OF 9.
12. Many cooking pots have hard plastic or wooden handles. What is the reason for this?

a. The handles are made from a good conductor of heat so that the heat is drawn away from the pan to protect your hands.
b. The handles are made from a poor conductor of heat so that the heat cannot be drawn into your hands as easily.
c. The handles are made from different materials to make use of the differing chemical properties to block the transfer of heat.
d. When the handles heat up, they expand more than the pot thus allowing the handles to radiate heat away more effectively.

13. What does it mean to say that a material has a high specific heat?

a. It means the material is a poor conductor of heat.
b. It means the material is a good conductor of electricity.
c. It means the material can get very hot compared to other materials.
d. It means the material readily absorbs and releases energy.

14. How can the specific heat be characterized for a material that heats up quickly?

a. It has a low specific heat.
b. It has a high specific heat.
c. It is impossible to make this judgment.

15. What mass of ethyl alcohol will give up 33,000 J of energy as it cools from 27°C to -3°C?

a. 2.41x109kg
b. 0.566kg
c. 1.92×109kg
d. 0.453kg

Questions 16-19

A 75 g chunk of metal is heated to 100°C and then dropped into 0.5 kg of water initially at 22°C. After a short time, the water reaches a final temperature of 23.1°C.

16. How much heat energy does the metal transfer to the water?

a. 345 kJ
b. 345 J
c. 2302 J
d. 24.5 kJ

17. What is the final temperature of the chunk of metal?

a. 23.1°C
b. 22°C
c. 92.7°C
d. 54.9°C

18. What is the specific heat of the metal?

a. 399
b. 27,900
c. 130
d. 377


19. The chunk is most likely made of which type of metal?

a. brass
b. lead
c. tin
d. copper

20. In the old days, it was common to bring a hot object into bed with you on a cold winter night. Which would be better: a 10 kg hot water bottle or a 10 kg iron block, both at the same temperature?

a. The water bottle because water has a higher specific heat.
b. The water bottle because iron has a higher specific heat.
c. The iron block because water has a higher specific heat.
d. The iron block because iron has a higher specific heat.

2006-07-07 06:48:57 · 5 answers · asked by Max M 1

2006-07-07 06:30:55 · 7 answers · asked by dogon 2

I always experienced that heavier skiers are faster than me. Why is that? All the physical rules I know lead to the solution that they aren't faster, but that can't be :-(

Thanks in advance for your help

Andi

2006-07-07 06:21:14 · 7 answers · asked by andilindenblatt 2

Theists please don't answer.

2006-07-07 05:57:46 · 35 answers · asked by Anonymous

i weight 130 and really good answers

2006-07-07 05:40:34 · 5 answers · asked by Anonymous

I can sometimes 'see' what is meant by the term. Mostly I am befuddled. It seems like a masterly piece of trickery. Is there such a 'thing' as the cosmological constant, unless of course it suits us to believe in one ??

2006-07-07 05:29:03 · 4 answers · asked by merckx72 1

i weight 120

2006-07-07 05:28:28 · 8 answers · asked by Anonymous

Why does a small stone weighing a couple of grams sink in the ocean when massive ships weighing tons can float?

2006-07-07 04:58:59 · 40 answers · asked by Flossie 2

2006-07-07 04:56:56 · 7 answers · asked by litesmart 1

As we all know has gravitation an influence on photons, ligth rays; it can change the light rays direction. Thats why even light can't leave a black hole once behind the event horizon.
From my understanding of gravitstion if "things" can attract each other, both must have their own gravitational field. If this is true , also photons must have a very very small gravitational field and paralell light rays (photons) therfore will attracted each other and can't be paralell and the rays will cross each other and finally will join in one ray.

Or am I wrong ?

2006-07-07 04:43:40 · 11 answers · asked by Joe_eoJ 2

2006-07-07 04:17:15 · 8 answers · asked by Vassilios V 1

Everything I've read about the Oort cloud seems to qualify statements with phrases like "is said to" or "seems to". Do we know that the Oort cloud exists for sure? Have we seen other Oort clouds around other solar systems? If we haven't seen them around other solar systems then why would we assume that there is one around ours?

2006-07-07 04:02:36 · 3 answers · asked by Anonymous

how many feet or how high does a human legs withstand an impact if you are going to jump?

2006-07-07 03:44:21 · 5 answers · asked by Anonymous

Can the orbital speed can be increased or decrease artificially to avoid an asteroid collition?

2006-07-07 03:36:14 · 8 answers · asked by EC2talk2 2

if an object is placed to the left of a concave mirror beyond it's focal point..........In which direction will the image move when the object is moved farther to the left?

2006-07-07 03:25:41 · 2 answers · asked by Anonymous

what happens to light when it strike a plane mirror? it will be....

scattered,refracted,diffracted,regularly reflected or irregularly reflected....what?

2006-07-07 03:06:41 · 12 answers · asked by Camille L 1

could they eventually shift to the equator?

2006-07-07 02:42:53 · 7 answers · asked by goring 6

2006-07-07 02:05:52 · 6 answers · asked by Anonymous

Why do the needle in a compass shows northern direction everytime?

2006-07-07 02:02:45 · 9 answers · asked by 3's 2

2006-07-07 01:58:27 · 10 answers · asked by Serpentine Warrior 1

2006-07-07 01:42:57 · 24 answers · asked by Bobby D 1

This is just a radical theory I came up with. I'd like to hear a physicist's thought.

What if EVERYTHING in the universe is composed of one single atom, moving at a constant rate - the speed of light - to create everything that exists?
Think of pixels on your television - each one is lit starting from the top left corner, and moving in sequence to fill the screen. This composes one frame. Many frames per second make up the moving image we see.
What if life worked in the same manner and that one atom was composing everything? This would explain where all the "mass" in the universe came from. The smallest fraction of time may actually take an enormous amount of time to compose, but in our frame of reference, it moves seamlessly and at a constant rate.
The theory of relativity suggests non-simultaneousness and time dilation, both which would play major parts in supporting this theory.

It seems impossible, but the laws of Physics do not care if the human brain can comprehend them.

2006-07-07 01:38:16 · 11 answers · asked by clone1973 5