Physics - October 2006

2006-10-24 09:15:59 · 13 answers · asked by Chris M 2

2006-10-24 09:14:48 · 10 answers · asked by WillyINCALI 2

2006-10-24 09:14:25 · 12 answers · asked by Live & Let Live! 1

Objects with masses of 150 kg and a 450 kg are separated by 0.380 m.
(a) Find the net gravitational force exerted by these objects on a 59.0 kg object placed midway between them.
N
(b) At what position (other than infinitely remote ones) can the 59.0 kg object be placed so as to experience a net force of zero?
m from the 450 kg mass

2006-10-24 09:13:18 · 2 answers · asked by activegirl 1

On star trek, when photon torpedoes are fired they appear as red (or another color) blobs of light, if photon torpedoes are perported to travel faster than the speed of light how can the human eye perceive them as light blobs?

Photon Torpedoes

Photon torpedoes are the principal faster then light weapon system used my most major cultures in the alpha quadrant. Torpedoes have been preferred in FLT combat due to phasers EM energy is diminished when it hits the light barrier, although recent developments have allowed phasers to be used at warp velocities.

Photon torpedoes were first developed by the Federation in 2215, to replace earlier nuclear weapons. These torpedoes were extremely limited and used only for defense of a starship, due to their relatively low yield and short range. These torpedoes worked on a simple 1:1 matter, anti-matter reaction, where deuterium slugs were injected into a magnetically contained antideuterium. The early torpedoes had a tactical range of 750,000

2006-10-24 09:07:01 · 5 answers · asked by Anonymous

HINT: The answer is hidden in the phenomenon of global warming & black body radiation.

2006-10-24 08:59:17 · 6 answers · asked by Live & Let Live! 1

2006-10-24 08:38:56 · 4 answers · asked by bigdice 2

It seems like the blade going into the wind would have more lift than the one going downwind.

2006-10-24 08:09:59 · 5 answers · asked by suffaman46 1

A sample of blood is placed in a centrifuge of radius 12.0 cm. The mass of a red blood cell is 3.0X10^-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 X10^-11 N. At how many revolutions per second should the centrifuge be operated?

2006-10-24 08:01:35 · 1 answers · asked by activegirl 1

and can you tell the chemical properties of the just by looking at it?

2006-10-24 07:54:49 · 2 answers · asked by bigdice 2

An air puck of mass 0.32 kg is tied to a string and allowed to revolve in a circle of radius 1.3 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass of 0.9 kg is tied to it. The suspended mass remains in equilibrium while the puck on the tabletop revolves.
(a) What is the tension in the string?
(b.)What is the force causing the centripetal acceleration on the puck?
(c)What is the speed of the puck?

2006-10-24 07:51:10 · 2 answers · asked by activegirl 1

if a penny is dropped from a building and lands on the ground at 6 seconds. What is the height of the building?

2006-10-24 07:30:06 · 4 answers · asked by dreamz 4

-lik gravity nd friction stuff lik dat....

2006-10-24 07:27:14 · 4 answers · asked by Anonymous

I am playing Dungeons and Dragons and there is an extremely big creature. He is 260,000 pounds, he is 4 stories tall, and 50 feet long. He also has a shell on his back that is similar to a turtle shell. My problem is, can this creature float. He is extremely dumb but will his bouyancy allow him to float?

2006-10-24 07:17:49 · 5 answers · asked by Gothic Hardy Boy 3

A real bike that you ride (BMX styles with 8-8.5" petals)

2006-10-24 06:55:19 · 6 answers · asked by S--slick 4

2006-10-24 06:53:13 · 4 answers · asked by Anonymous

what is instantaneous speed?
How is is determined or caluculated on a graph?
On a graph is it something about drawing a triangle and its diagnals or tangent or what exactly ? could someone plz clarify this for me?

2006-10-24 06:31:52 · 1 answers · asked by dreamz 4

In our minds we can think and such. Like if I imagined I hit the desk, my hand doesn hurt, but if I did that in real life, my hand would....but both world in my mind and in real life still in three dimensions?

2006-10-24 06:22:02 · 7 answers · asked by charming_imogen 2

I find the big bang theory implausable and confusing. Maybe it's just because I'm not intelligent enough but I can't get my head around it. Can anybody give me some plain irrefutable evidence of its existance?

2006-10-24 06:19:36 · 14 answers · asked by Anonymous

yes i know most people will say both will fall at the same time, but if aerodynamics is factored in, considering the bulkiness of the feathers would it not take a fraction longer to hit the ground?

2006-10-24 06:13:19 · 7 answers · asked by brian o 2

Actually, I was sitting down in the study some days back thinking about Mechanical Devices. So I thought of Magnetic Effect on Wheels, So I am wondering if the principle that Postulates that "Like Poles Repel while Unlike poles Attract"; will work on a kind of cart or any device on 4 wheels, Though I just graduated from the High School.

I need to know if there is some kind of procedure which could be used to control the wheel, the area where by I am having problem is "How do I make the magnets loose there power to slow down the speed of the device? If you have any idea please help me with this.

I believe that if it works I will be able to apply it to devices like Bicycles and some other stuffs.

Please, If I am going insane let me know, At the moment I am using tiny Magnets.

Thank you

2006-10-24 05:49:51 · 6 answers · asked by Anonymous

Given that there is no way to prove experimetaly, it's veracity>

2006-10-24 05:49:11 · 9 answers · asked by Anonymous

a) intermittent direct
b) intermittent alternating
c) continuous direct
d) continuous alternating

2006-10-24 05:42:05 · 9 answers · asked by Anonymous

I want detailes about my questions for my class ninth physics project.

2006-10-24 05:38:49 · 4 answers · asked by Anonymous

How long should we give string 'theory' to produce falsifiable predictions before we consign it to the 'interesting but not especially helpful' category of hypotheses?

2006-10-24 05:30:31 · 26 answers · asked by mesun1408 6

Define Temperature

2006-10-24 05:18:34 · 14 answers · asked by Aristotle 2

of 2.95 cm is dropped on its edge onto a horizontal surface. The coin starts out with an initial angular speed of 12.1 rad/s and rolls in a striaght line without slipping.

If the rotation slows with an angular deceleration of magnitude 2.29 rad /s^2, how far does the coin roll before coming to rest (in units of m)?

2006-10-24 05:02:35 · 4 answers · asked by Mariska 2

If an alumnium sheet is held between the poles of a large bar magnet, it requires some force to pull it out of the magnetic field even though Al is not ferromagnetic and does not touch the poles.
Why?

(I was thinking thatmovement of the metal in a magnetic field induces an emf in theopposite direction...Yes? No?)

2006-10-24 05:02:35 · 3 answers · asked by BugGurl 3

example Density of steel .2836205 lb/in2
Volume is.044cubic in.
What is weight in lbs

is it density *Volume?

2006-10-24 04:59:35 · 4 answers · asked by Dan 1

2006-10-24 04:47:13 · 7 answers · asked by Rae Lynn K 1