Physics - October 2006

2006-10-11 22:08:05 · 9 answers · asked by althaf basha d 1

what is quantum theory. is it very complicated theory?

2006-10-11 20:40:19 · 10 answers · asked by sanjeev k 1

2006-10-11 20:20:21 · 4 answers · asked by Anonymous

For example measuring how old the atom in the paper is
to determine when the paper was created.

I remember seeing on TV. But i don't know what the Method is called. Does anyone here know? Or perhaps know of any other methods of telling when the paper was created? Or any other science facility that can perform this kind of testing?

This is very important to me since the person iam having a lawsuit with has forged fake evidence! You contributions will help greatly!

Thanks
Ted

2006-10-11 19:42:28 · 7 answers · asked by Grad 2

I have to calculate the fourier series coefficients of the sawtooth function but instead of integrating i have to sample the function and the carrier then summate. when i do that the results arent correct. i dont know what i'm doing wrong, any ideas?

2006-10-11 19:30:35 · 2 answers · asked by la_fille_en_blue 2

When babe ruth hit a moner over the 7.5m high right field fence 95m from the home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.9m above the ground and its path initially made a 38 degree angle with the ground.

2006-10-11 18:25:04 · 1 answers · asked by 3ajeeba_q8 2

(A) a skier is accelerating down a 30.0 degree angled hill at 1.80m/s^2. What is the vertical component of her acceleration?
(B) How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 335m?

2006-10-11 18:22:11 · 2 answers · asked by 3ajeeba_q8 2

2006-10-11 18:20:54 · 6 answers · asked by Roscoe P Coletrain..yip yip 3

Connection wires to a electric heater doesn't get hot, when the heater coil is hot. why?

Lets think about a nicrome coil (of course small in length) connected to a lead acid battery via an uninsulated copper wire (of the same diameter as the nicrome coil)

Condition 1: Battery is switched off :- Now the nicrome wire is heated by a candle flame, as a result the coil heats up, and the connection wire (i.e. copper wire) also gets heated up in this case.

Condition 2: Now the battery is turned on and the coil gets heated ( in fact red hot), but this time the copper wire does not get much heated.Why?
I hope this has to do something with the flow of electrons

2006-10-11 18:19:41 · 4 answers · asked by A M 1

A punter kicks a footbal and it travels with the following component velocities: Viy=24.3 ft/sec Vix =51.3 ft/s

Calculate the initial velocity of the football at which angle it was kicked.

How would you do this? What formula would you use?

2006-10-11 17:55:27 · 4 answers · asked by zweeman16 1

Please help with this physics problem.

A 4.00 kg block is placed on top of a 12.0 kg block that rests on a frictionless table. The coefficient of static friction between the two blocks is 0.700. What is the maximum horizontal force that can be applied before the 4.00 kg block begins to slip relative to the 12.0 kg block, if the force is applied to each of the following?

(a) the more massive block

= 109 (.7 * 16*9.8)

(b) the less massive block

How do I do part b?

The answer for part b is not, 53.85, 82.32, 27.44, or 109.

2006-10-11 17:50:45 · 4 answers · asked by Confused 1

2006-10-11 17:46:23 · 10 answers · asked by SWEETOO J 2

Find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by the Earth and the Sun on that object is zero.

Me=5.98x10^24
Ms=1.991x10^30
G=(6.673x10^-11)

F=(GM1M2)/r^2

2006-10-11 17:20:39 · 5 answers · asked by Anonymous

Let me clarify my question, if two conductors of different materials placed in contact with each other and one material is heated, the heat energy is transferred to the other material by conduction, as a result the temperature of sceond material rises.
.
Now let us take our query, as heater coil gets heated the contact wires must also get heated due to the heat conduction from the heater coil. But this is not happening in the real case. (In essence the temperature of the contact wire almost remains unchanged) What is the reason?
Please consider this question in a very fundamental manner. For example if we connect a small piece of nicrome coil to a lead acid battery via a copper wire without any insulation the same thing is happening.
re Review

2006-10-11 17:19:25 · 5 answers · asked by Anonymous

Well theres a problem i need help with. It says some one throws the object up in the air and they give you an initial speed im pretty sure. They want to find out what the maximum distance it will reach before the object falls. I was obviously paying attention about dropping objects, but how do you do this one?

2006-10-11 17:18:59 · 5 answers · asked by playaxn1 2

Let me clarify my question, if two conductors of different materials placed in contact with each other and one material is heated, the heat energy is transferred to the other material by conduction, as a result the temperature of sceond material rises.
.
Now let us take our query, as heater coil gets heated the contact wires must also get heated due to the heat conduction from the heater coil. But this is not happening in the real case. (In essence the temperature of the contact wire almost remains unchanged) What is the reason?
Please consider this question in a very fundamental manner. For example if we connect a small piece of nicrome coil to a lead acid battery via a copper wire without any insulation the same thing is happening.
re Review

2006-10-11 17:17:28 · 2 answers · asked by Anonymous

As shown in the figure below, a uniform electric field has magnitude E = 290 N/C and is directed to the right. A particle with charge +3.6 nC moves along the straight line from a to b.

(a) What is the electric force that acts on the particle?

b) What is the work done on the particle by the electric field?

(c) What is the potential difference Va - Vb between points a and b?

2006-10-11 17:14:14 · 2 answers · asked by p_rob22 1

Jonice has decided to sail around the world. She starts off moving East with a speed of 40 m/s. The ocean currents are pushing her north with a speed of 15 m/s. What is her resultant speed?

2006-10-11 16:59:29 · 7 answers · asked by Anonymous

Please consider this question in a very fundamental manner. For example if we connect a small piece of nicrome coil to a lead acid battery via a copper wire without any insulation the same thing is happening.

2006-10-11 16:58:37 · 4 answers · asked by Anonymous

Byron throws a football at a 30 degree angle from the ground with a speed of 26 m/s. What are the horizontal and vertical components of his throw?

How do I find the horizontal and vertical components for this problem?

2006-10-11 16:56:05 · 4 answers · asked by Anonymous

In a region where there is an electric field, the electric forces do +3.0 10-19 J of work on an electron as it moves from point X to point Y.
What is the potential difference, VY - VX, between point Y and point X? In Voltz

2006-10-11 16:47:04 · 2 answers · asked by p_rob22 1

2006-10-11 16:38:36 · 9 answers · asked by planetshadow 2

An object slides down an inclined plane of angle 20° and of incline length 4 m. If the initial speed of the object is 6 m/s directed down the incline, what is the speed at the bottom? Neglect friction.

2006-10-11 16:30:49 · 3 answers · asked by nt 2

you have only 10 options rank them.
Isaac Newton, Stephen Hawking, Euclid, Simpson, Joeseph Fourier, Karl Friedrich Gauss, Archimedes,Albert Einstein, Joseph Louis de Lagrange
sorry almost forgot make it 11
Johannes Kepler,

2006-10-11 16:25:45 · 4 answers · asked by Milton C 3

Here is the problem: Jessica is riding her bike along Ross Road. With the bike, she has a mass of 90 kg and is going along at 8 m/s when a deer runs out in front of her. She slams on the brakes and manages to stop the bike in 3.2 seconds. How much net force did Jessica exert on the bike? In what direction did the net force act? What was the accleration of the bike? How far did she go before stopping?

2006-10-11 16:23:16 · 2 answers · asked by Anonymous

quick give me some good sites where i can check out some catapult designs...im trying to make a small catapult!!
hurrryyy..i need plans NOW

2006-10-11 16:21:29 · 13 answers · asked by §gorda§ 3

I'm in 8th grade and have a science/ physics problem...

my teacher is requiring the class including my group (group of 3 boys and me) to do a science project based on sound and light.

vibrations/mirrors/ reflection...

DO YOU HAVE ANY THEME SUGGESTIONS on what you would like to see in a sound and light show?, please help!!!

2006-10-11 16:21:09 · 2 answers · asked by Anonymous

She is looking for a simple explanation with possibly diagrams (she is concerned because of the press regarding the North Korean test).

She is interested in how the explosion occurs, what is radiation, why does it last so long, and how does radiation kill people?

2006-10-11 15:57:45 · 8 answers · asked by sdms50 1

2006-10-11 15:43:52 · 4 answers · asked by shane m 1

2006-10-11 15:43:02 · 4 answers · asked by shane m 1