Physics - January 2007

Since we are unable to actually observe electrons, quarks, muons etc and they are building blocks of 'observable matter' a better description would be either another single word, eg 'mattorite' or a phrase 'the essence of matter', which would give a greater clarity to their role in life.

2007-01-26 20:27:22 · 10 answers · asked by Anonymous

We know friction occurs beetween two solid objects but were not sure about a kite and the surrounding air, but weve got a sneaking feeling it does, like aerodynamics or something. Sensible answers please as this is for my 8 year old sons homework and he will be reading this, thanks

2007-01-26 20:19:50 · 15 answers · asked by weedraker 2

Geonium is a man made atom, created at lequid helium temperature in ultrahigh vaccum for an individual electron in magnatic and electric trapping feilds. For this atom the electron gyromagnatic ratio g=2000 000 000110(60) has been measured im microwave spectroscopy experiments after substraction of quantum electrodynamics shifts. The g-g Dirac=11x10*-11 excess over the value g Dirac=2 for the theoretical Dirac point electron suggest for the electron of nature a corrosponding excess radius Re-RDirac ovar the Dirac Radius R dirac=0 and spatial Structure. This is well Known Ok. A near Dirac particles an electron radius Re~=
10*-20 centemeter had been extraplotted. In the Big Bang Cosmology, a close to zero or zero mass particle and antiparticle is higly required as per Fremi Yang model, which indicate nothing state (zero mass) that resulted a spontanoius quantum jump in QED and actually initiated the Big Bang. and the particle antiparticle were in Spin[ Dirac point particles]. So far we Know Quark - antiquark particles as most elementary particles. Some are of view as Nutrinos particles. Quarks has at finest level has colour as energy. In 1974 Abdul Salam- A Ex Student from Calcutta university, Citizen of Pakistan by Birth, Nobel Lauratee in Physics & also others pictured the electron and found a particle on the level of quark as composed of three subquarks each 10*10 times havier than electron in Gev as the proton is composed of three spin 1/2 particles.
Is it possible to have a sub sub quarks or Sub2 quarks particles all tightly bound in the nucleon?- This particles must be the Sub X qurks, smaller & smaller, less & less imperfect near Dirac particles held together by new stronger & stronger froces and with ever increasing mass in Gev- Probably in the bigining moment (zero time) of our universe the Big Bang in one spontanious quantum jump in an individual Ba+ ion, in which metastable state decayed in to finally nucleon- anti nucleon pair. Fremi Yang idea still demands zero total relativistic energy or mass of bound pair

2007-01-26 19:57:55 · 4 answers · asked by Prof. Pranab Bhattacharya 2

2007-01-26 19:28:24 · 5 answers · asked by clergy 1

How are the lights and appliances in your home wired? Draw a sketch of your hypothetical circuitry wiring in your home.
Explain.

2007-01-26 19:23:59 · 8 answers · asked by kafka 1

What is and how big is supper atom

2007-01-26 18:34:17 · 2 answers · asked by Mohsen J 2

A 15.2-kg block rests on a horizontal table and is attached to one end of a (nearly) massless horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 5 m/s in 0.45 s. In the process, the spring is stretched by 0.2 m. The block is then pulled at a constant speed of 5 m/s, during which time the spring is stretched by only 0.05 m. Find the spring constant of the spring.

2007-01-26 18:23:24 · 3 answers · asked by Victor C 2

#5. A sprinter running at a speed of 12 m/s is approaching the finish line and, in a final burst of willpower, she forces herself to accelerate over the last 3.50 meters of the race. If this period of acceleration lasted for a time interval of 0.20 second, what was the sprinter’s speed as she crossed the finish line?

#6. An object with initial velocity of 5 m/s has a constant acceleration of 2 m/s2. When its speed is 15 m/s, how far has it traveled?

#7. An automobile traveling at a speed of 30 m/s accelerates uniformly to a speed of 60 m/s in 10 s.
a.Acceleration of the car?
b.Distance does the car travel during the 10 second time period?

2007-01-26 18:00:45 · 2 answers · asked by Anonymous

1) The instantaneous velocity is zero but changing
2) The instantaneous velocity is not zero but changing
3) The instantaneous velocity is constant
4) The average velocity is zero

2007-01-26 17:49:46 · 4 answers · asked by Anonymous

2007-01-26 17:25:08 · 4 answers · asked by sam 1

i want to know the difference between MOSdiode and Schottky diode. plz give my links or ans. 4 this, thanks

its realted semiconductors

2007-01-26 16:15:29 · 2 answers · asked by speck197 2

I know static a charge is produced when fur is rubbed on amber etc. I want to know what caused the electrons to move.

2007-01-26 15:57:45 · 7 answers · asked by meg 7

2007-01-26 15:20:56 · 6 answers · asked by roffer v 1

An elevator car, with a mass of 500 kg, starts at rest and moves upward with a constant acceleration until it reaches a velocity of 1.60 m/s after 2.70 seconds. If the car rises 2.16 m during this time, what is the average power of the elevator motor during this period? Ignore friction and other resistive forces, and the mass of the cables.

2007-01-26 15:12:01 · 4 answers · asked by venom90011@sbcglobal.net 1

I have always wondered the logics behind it. If you elevator was crashing towards the ground with ou in it;

What if you jump at the last second and you are in the air as the collision occurs:

1. Was it wise to jump?

2. Will it save your life or better your chances?

3. What is the physics behind it?

2007-01-26 15:08:04 · 9 answers · asked by B.R.E 2

And thank you for your answer...Tom Science 4

2007-01-26 14:38:02 · 1 answers · asked by Anonymous

2007-01-26 14:36:43 · 11 answers · asked by RAVINDRAN K 2

2007-01-26 14:09:31 · 8 answers · asked by tum 1

A 20-kg rock is on the edge of a 100 meter cliff, as shown in the picture link.

a. What potential energy does the rock possess relative to the base of the cliff?
b. THe rock falls from the cliff. What is its kinetic energy just before it strikes the ground?
c. What speed does the rock have as it srikes the ground?

*Picture link: http://img95.imageshack.us/img95/2082/scan0002zd3.jpg

Please help me with this problem.
I'm having trouble solving it.

2007-01-26 13:50:13 · 4 answers · asked by swimmertommy 1

2007-01-26 13:49:15 · 2 answers · asked by JAMES 4

A constant net force of 410 N is applied upward to a stone that weighs 32 N. The upward force is applied through a distance of 2.0 m, and the stone is then released. To what height, from the point of release, will the stone rise?

Please help me with this problem.
I'm having trouble solving it.

2007-01-26 13:42:34 · 4 answers · asked by swimmertommy 1

A person sittting on the top of the tall biulding drops ball at regular interval of one second. Find the position of the 3rd, 4th, 5th ball when the 6th ball is dropped?

2007-01-26 13:41:29 · 3 answers · asked by Anonymous

it keep going 30 mph in one spot or would it go faster in the car and go crazy?

2007-01-26 13:41:00 · 6 answers · asked by Z of L of U 2

Mary weighs 505 N. She walks down a flight of stairs to a level 5.50 m below her starting point. What is the change is Mary's potential energy?

Please help me with this question.
I'm having trouble solving it.

2007-01-26 13:40:36 · 4 answers · asked by swimmertommy 1

A 14,700 N car is traveling at 25 m/s. The brakes are applied suddenly, and the car slides to a stop, as shown in the picture link below. The average brakeing force between the tires and the road is 7,100 N. How far will the car slide once the brakes are applied?

This problem is complicated and it is giving me trouble.
Please help me to understand it to solve.

2007-01-26 13:38:47 · 2 answers · asked by swimmertommy 1

Project Criteria: The size of a shoe box. ~The protection for the egg must be engineered, not just filled with stuff.~No type of packing material will be allowed. This includes but may not be limited to such items as : bubble wrap, cotton balls, tissue , styrofoam pellets, cronstarch pellets, pillows, stuffed animals, shaving cream, paper, ballons or egg crate foam. No type of food may be used as packing material. This includes : jello, marshmallow, popcorn, or peanut butter,~ No wooden or metal boxes~No parachutes or helium filled balloons will be allowed~The egg will be provided at the time of the drop which you will then have to insert it into your project~ No boxes will be accepted that are preloaded with an egg. And it must have physics behind the design. Including Newtons laws of motion, terminal velocity, momentum, and gravity.

Thanks for the help ahead of time.

2007-01-26 13:36:40 · 2 answers · asked by Anonymous

An NCC parade is going at a uniform speed of 6km/hr through a place under a berry tree on which a bird is sitting at a height of 12.1 m. At a particular instant a bird drops berry. Which cadet will receive the berry on his uniform?

2007-01-26 13:35:34 · 1 answers · asked by Anonymous

If a friend throws a ball at 20km/h, to you, the spectator, the ball appears to be traveling at 20km/h, right? Well, if your friend walks forward at 5km/h, and throws the ball at 20km/h, to you, the standing spectator, the ball seems to travel at 25 km/h, right?

Does the same apply to the speed of light? If you shot a laser pointer in a vacuum, and moved forward, would the light move faster than normal?

I don't know if it would move faster, or if the beam of light would just become more powerful... What do you think?

2007-01-26 13:29:56 · 7 answers · asked by theVisionary 4

Would you change anything in your life?

2007-01-26 13:26:21 · 11 answers · asked by Mysterious 4

Shawn and his bike have a combined mass of 45.0 kg. Shawn rides his bike 1.80 km in 10.0 minutes at a constant velocity. What is Shawn's kinetic energy?

Please help me with this question.
I'm having trouble solving it.

2007-01-26 13:25:15 · 1 answers · asked by swimmertommy 1