Physics - November 2006

2006-11-28 09:57:22 · 2 answers · asked by goring 6

air? Any help would be great. Thanks!

2006-11-28 09:52:29 · 6 answers · asked by taxloop 1

I asked a question like this a few days ago, and got nothing resembling consensus for an answer:

Imagine a frictionless world, that just happens to have a safe plummeting to the ground. The safe has a flat bottom which is perpendicular to the direction it is falling. Does the air impart a force on the safe opposite the direction of it's fall? What is that force called? Is it "air resistance"? If it is, is there a difference between air resistance and air friction, and what is it?

Thanks!

2006-11-28 09:50:54 · 2 answers · asked by chrissorry 1

everything starts when i was child 12 years old after i was lost from my village and everybody search to find me i was lost about 1 day and after that they found me from same night i sow a dream about one woman with some kind of armor shyning and she was blond with greeneyes she tuch me at my eyes something hapenet like earth shakes and next day i talk one strange language differend from others and every night i go for sleap i always see her in my dreams in any dream she is there everytime she is changeing from day to day she dresset in whit red black gold silver her hair is long and some times short but still she is the same never ageing she teachingme things about my past she say that i am different and this body i have its not my body that i am from other world she says that she is my real mother till now i wright this language she give me and i try to find from somewhere somebody who speaks the same language some experts i am now 33 years old pleas tell me honestly can you helpme

2006-11-28 09:47:23 · 4 answers · asked by argadiamou 1

Does anyone know who discovered the proton, neutron and electron, and when?

2006-11-28 09:42:05 · 1 answers · asked by *love_life* 2

2006-11-28 09:41:02 · 2 answers · asked by no name 1

2006-11-28 09:22:46 · 2 answers · asked by lostprophetslove 1

True or Rewrite the in parentheses part to make it true.
11.The speed of a rotating object changes only if (torque) is applied to it.

12.The quantity of angular motion that is used with rotating objects is called (linear) momentum.

13.When a (torque) acts on an object, its angular momentum changes.

16.The torque on the planets orbiting the sun is zero because the gravitational force is directed toward the sun and, therefore, is not (perpendicular) to its velocity.

19.When a machine alters mechanical energy, the product of the force and distance is (zero).

2006-11-28 09:15:57 · 2 answers · asked by marissa c 1

2006-11-28 09:04:26 · 3 answers · asked by avian1618 1

2006-11-28 08:58:03 · 6 answers · asked by Mark L 1

Is there diffusion in the vacuum due to continuous creation and annihilation? Wouldn't there be a net drift?

2006-11-28 08:57:02 · 2 answers · asked by Lorelei 1

I have this "object" with "FOUR THINGS" on it, if I cut off "ONE THING" it then has "FIVE THINGS"!!! What are the "THINGS"????

2006-11-28 08:40:47 · 12 answers · asked by Anonymous

until the egg becomes positivetly buoyant (floats). How much salt do you use?

2006-11-28 08:36:04 · 6 answers · asked by Anonymous

Say some way you clould dog all the way down the earth adn to the other side would you fall right cack down your would you stand up?

2006-11-28 08:35:22 · 2 answers · asked by M R 1

Plus when you get half way there you will have to start digging upwards. What happens when you get to the other side Will you fall backwards or will you stand up?

2006-11-28 08:26:54 · 19 answers · asked by bizzelx8 1

If the cat lands on the skateboard what is the speed of the skateboard-cat combination?

2006-11-28 08:18:14 · 1 answers · asked by Kayla H 1

i have a distance time graph of a ball falling to the floor and bounce a couple of time and i worked out the velocity which was the gradient but i dont know how to work out the acceleration using the graph or data from it and another question reads "the balls gravitation potential energy is proportional to its highet, calculate the percentage loss in energy for each of the bounces? so i dont no that one either lol

if anyone could help with either thing i would greatly appreciate it

2006-11-28 08:17:49 · 3 answers · asked by Jezza 2

It fires a .150kg baseball at an angle of 30 degrees with the vertical at a speed of 20 m/s. What is the recoil velocity of the machine?

2006-11-28 08:15:43 · 1 answers · asked by Kayla H 1

output of the machine?

2006-11-28 08:13:22 · 2 answers · asked by Kayla H 1

A woman weighing 500 N glides across some ice, starting her glide with a speed of 4 m/s. If the coefficient of friction between the skates and the ice is 0.115, how far does she go before comes to a rest?

2006-11-28 08:10:43 · 1 answers · asked by Kayla H 1

horizontal. If the crate moves at a constant speed, fing the coefficient of sliding friction between the crate and the floor.

2006-11-28 08:07:04 · 2 answers · asked by Kayla H 1

2006-11-28 07:57:15 · 3 answers · asked by michelle i 1

A 50.0-g object connected to a spring with a force constant of 35.0 N/m oscillates on a horizontal, frictionless surface with an amplitude of 4.00 cm. Find (a) the total energy of the system and (b) the speed of the object when the position is 1.00 cm. Find (c) the kinetic energy and (d) the potential energy when the position is
3.00 cm.

2006-11-28 07:55:20 · 1 answers · asked by Anonymous

isnt it just as reasonable to say that the observer is traveling at c and that light is at rest? isnt this also supported by observing that time slows (perhaps to a stop) are c is approached? isnt time a way of measuring movement? we also know that no observer can truely be at rest so isnt it more logical to say light is at rest and the observer moves at c?
i assume i am wrong but please explain why.

2006-11-28 06:54:53 · 10 answers · asked by karl k 6

I would like to know more specific details about the fourth dimension and other dimensions.

2006-11-28 06:46:31 · 7 answers · asked by clutchdrive1 2

At a very loud rock concert you measure the sound level at 120 dB. A jack hammer typically operates at a sound level of 92 dB. How many times more intense is the sound at the rock concert in comparison to the jack hammer?

2006-11-28 06:09:50 · 3 answers · asked by Missy 1

ok, here is the question i am stuck on. : why doesnt a falling raindrop get faster and faster as it falls?

2006-11-28 05:19:42 · 5 answers · asked by Anonymous

A rotating rod that is 15.3 cm long is spun with its axis through one end of the rod so that the other end of the rod has a speed of 2000 m/s (4,500 mph).

a. What is the centripetal acceleration of the other end of the rod?

b. If you were to attach a 1.0-g object to the end of the rod, what force would be needed to hold it on the rod?

Please help me with this problem.
I'm having a hard time understanding it.

2006-11-28 04:57:31 · 3 answers · asked by swimmertommy 1

2006-11-28 04:52:56 · 3 answers · asked by Adrian G 1

Now the past few weeks I had awoken to find the lamp on, thinking it had malfunctioned or who knows why or how it turned on, now I am sure something is trying to turn it on at night, I was alone in the house and only my 1 year old was sleeping in her crib. I did a double take to get a good look at it and saw it using it's finger to try and touch the lamp and turn it on then it seemed to realize I saw it and was gone?? any ideas on what it was?

2006-11-28 04:47:50 · 6 answers · asked by b b 1