Physics - May 2007

can someone help me ??
I have to give a presentation (my homework) about higher order tensor while i knew nothing about it. can u explain it to me the definition and rule...
pls give me the link to any source where i can learn about it or just email me at hantzkie@hotmail.com

2007-05-13 09:16:12 · 1 answers · asked by blue angel 2

I took a bus today and I noticed a fly moving back and forth on the bus. I’m not sure how fast a fly can go but wouldn't it be difficult for it to do that. The bus was going about 35 miles per hour.
How do you explain that?
Seeing as though the speed of the bus isn't being transferred to the fly.
Just musing

2007-05-13 08:55:44 · 4 answers · asked by Anonymous

Ok, the other day somebody posted a question about a Japanese scientist who did an experiment where he exposed water to different thoughts and then gave them to plants to see if they had an effect on the plants. Does anybody else know this experiment? The guys name, a link to information on the experiment. I really want to know more about it but can't find any info on it.

2007-05-13 08:40:53 · 1 answers · asked by Anonymous

Especially if a huge amount did. ( Which, I guess would be unlikely ).. Also, what if dark matter did?

Thanks!

2007-05-13 07:37:44 · 5 answers · asked by ? 2

2007-05-13 07:09:04 · 7 answers · asked by Anonymous

2007-05-13 06:49:33 · 11 answers · asked by Mario Rodriguez 1

calculate the resistance of the voltmeter?

diagram below
http://img265.imageshack.us/my.php?image=32936731hr6.jpg

2007-05-13 06:18:56 · 4 answers · asked by purejoker 2

Farmer brown claims that a very powerful radio transmission antenna next to his land has caused sparks to jump along the wire in a fence gate, and from there onto one of his sheep.

The inspection of the site indicates that the gate is made of three strands of barb wire that are each 3.00m long. An inspection of the antenna shows that it is oriented vertically and is transmitting a signal of 6.67* 10 to the power of 5 Hz . You decide that this is highly unlikely . Describe at least 2 reasons why the evidence makes Farmer Brown's case suspicious . Show any supporting calculations.

PLS HELP ME !!!!!!

2007-05-13 06:11:06 · 3 answers · asked by K_K 1

2007-05-13 05:37:42 · 1 answers · asked by Anonymous

i mean, isnt it just a hypothesis. nothing really proven actually? or is it?

2007-05-13 04:41:24 · 5 answers · asked by Anonymous

Also, any calculations on how big this effect could be. Also - how would you extract the maximum possible energy from tidal movements ?

2007-05-13 04:41:00 · 9 answers · asked by ____ 2

2007-05-13 04:31:34 · 8 answers · asked by Justin M 1

explain

2007-05-13 04:27:13 · 3 answers · asked by Anonymous

I simply can't figure it out. Please answer me.

2007-05-13 03:57:34 · 6 answers · asked by Nivvedan 2

2007-05-13 03:18:43 · 6 answers · asked by Anonymous

1. electric bulb
2. red hot iron ball
3. carbon arc lamp
4. sodium vapour lam

2007-05-13 02:13:08 · 5 answers · asked by Anonymous

A sphere with heft 4 kg, is thrown horizontally with a velocity 15m/s. Find the kinetic energy in the end of the third second.

Answer: 2.18 kJ

2007-05-12 23:52:53 · 6 answers · asked by Crystal 3

this one's rarer but more paradoxial than the twin paradox, although the possibilities are either Newtonian or Einsteinian.
well it goes thus:
Newton said that orbits are reversible. That means light striking on a mirror normally will strike back at the same speed normal to the mirror. The confrontation comes when we theoritically assume a light source near to a black hole, but not so near, emitting a photon ray which hits a mirror kept on the surface of the black hole. According to simple non relativistic motion, i.e. Newtonian motion, the photon which bounce back leaving the black hole to reach the source again. But this aint possible according to Einstein relativity. accrd. to that, the photon will not accelarate more than c in its journey upto the mirror, but if it bounces back, the gravity will decelarate it down and it will never leave a certain sphere with finite radius.

2007-05-12 23:11:45 · 5 answers · asked by Anonymous

I am wondering ..
I realize it is called a " solar system" because the sun is the center of the system of planets. Now i am wondering if there is some scientific reason that it could not be the opposite. A planet in the center with stars orbiting it.
Is this possible?

2007-05-12 20:42:47 · 5 answers · asked by Anonymous

For example, why is it that this force pushes boats up and balloons up. Why not down?

2007-05-12 20:03:33 · 7 answers · asked by presidentrichardnixon 3

is it A.the pithball always holds a natural positive charege,and it is attracted to yhe other charged object._B.electrons jump onto or off the nuetral ball when a charged object comes close to it, causing it to become charged_C.as soon as an object approches the pithball there is an immediated repulsion_D. the pithball does not become charged but it gets caught up between two other charged objects......please someone help me answer this hard question

2007-05-12 19:38:51 · 1 answers · asked by Anonymous

Does this support creation, Or is there a theory explaining why we have this exact amount of energy and matter in the Universe?

2007-05-12 19:36:31 · 3 answers · asked by Black Hole Gravity Unleashed 3

A cable is wrapped around a secured pulley in the shape of a solid cylinder (1/2mr^2) with rotational inertia I= 0.250 kg-m^2 and radius R = 0.500 m. The cylinder rotates without friction. The free of the end of the cable is connected to a vertically hanging block of mass m = 1.0 kg

a.) What is the magnitude a of the block's downward acceleration?
b.) what is the tension T in the cable?

c.) Suppose the blocks drops from rest through a vertical distance h = 2.0 m. What is the speed v at the speed of this motion?

2007-05-12 17:39:58 · 2 answers · asked by biscuits 2

2007-05-12 17:36:04 · 2 answers · asked by lil red momma 1

is it A.3 ohms_ B. 6ohms_C. 9ohms_D.27ohms.....please someone help me answer my homework question(

2007-05-12 16:22:25 · 5 answers · asked by Anonymous

i took apart a stereo to get the motors out of the CD player but i got bored and put it back together and a wire wasnt connected right or sumtin and the fuse blew so i used a penny and it looked like it was starting to melt after i short circuited it i want to know how much voltage it would have took to do that

2007-05-12 16:07:30 · 4 answers · asked by Anonymous

I don't understand the meaning of "space" in this context. If we take say a quartz crystal there are no spaces in it as the atoms are completely compacted together. I read that the angle between cystal faces is controlled by the spacing between lattice points. Are lattice points like the centre of atoms? Any help would be appreciated.

2007-05-12 15:34:23 · 3 answers · asked by Gideon 1

Why does water temperature remain at 100 degrees Celsius at 1 atmospheric pressure (sea level) despite continued addition of heat after it comes to a boil?

2007-05-12 14:41:13 · 9 answers · asked by Anonymous

How can I drop an uncooked egg approximately 2 stories with it breaking? I have tried peanut butter, marshmallow, suspending it in an elastic cradle inside a wiffle ball, nothing seems to work, any ideas???

2007-05-12 14:37:29 · 5 answers · asked by spliff 5

in a '57 Chevy and turned on your headlights, would the light from the headlights travel faster than the speed of light?

2007-05-12 14:03:37 · 11 answers · asked by upcguineapig 2