Physics - September 2007

Install capacitors to reduce humming and a ripple current? Before or after inversion? These are 3,000 watt inverters.

2007-09-14 09:02:09 · 2 answers · asked by smittybo20 6

How do I keep ice from building up on the surface, and snow from accumulating on them?

2007-09-14 08:59:11 · 5 answers · asked by smittybo20 6

How many blocking diodes would I need to install to prevent backflow and battery drainage? And what Amps?

2007-09-14 08:56:56 · 4 answers · asked by smittybo20 6

well i read this womans question about telekinetic and her son moved magasiens well i was wondering how do you develop these "powers" pls answere its my firs Q and im new
(can you puts some links or sommin)

2007-09-14 08:35:17 · 2 answers · asked by Anonymous

2007-09-14 08:25:04 · 6 answers · asked by Anonymous

2007-09-14 08:21:03 · 3 answers · asked by Anonymous

The distance between two telephone poles is 52.0 m. When a 0.900 kg bird lands on the telephone wire midway between the poles, the wire sags 0.210 m. How much tension does the bird produce in the wire? Ignore the weight of the wire

2007-09-14 07:19:42 · 5 answers · asked by ひいらぎ 5

What is the average hight and width of a Mushroom Cloud?

2007-09-14 06:57:08 · 5 answers · asked by l2wh 4

Say I took a reading on contact with the outside of the core while it was operating and was 200R/hr. Now say the distance from the core to the hull is 30 feet and the hull is 2 feet of steel. How much exposure would a fish get in 1 minute it was 5 feet from the outside of the hull.

2007-09-14 06:17:14 · 1 answers · asked by Anonymous

A stone is dropped from a tall building. At some point in the stone's fall, it passes a window that is 2.2m tall. It takes the stone 0.28s to go past the window from top to bottom. How far up past the window was the stone initially dropped from?

2007-09-14 06:17:09 · 3 answers · asked by Craiger 3

In comedy 'Down Periscope'
http://www.imdb.com/title/tt0116130/
cook Buckman released enough gas to be detected by enemy sonarmen as 'probable whale fart'.

Did the pressure inside the USS Stingray change?

2007-09-14 06:12:06 · 6 answers · asked by Alexander 6

A lighthouse that rises 49 ft above the surface of the water sits on a rocky cliff that extends 19 ft from its base. A sailor on the deck of a ship sights the top of the lighthouse at an angle of 30 degrees above the horizontal. If the sailor's eye level is 14 ft above the water, how far is the ship from the rocks?

2007-09-14 06:06:13 · 2 answers · asked by Anonymous

2007-09-14 05:57:24 · 7 answers · asked by Alexander 6

a quaterback throws a football towards a reciever with an initial speed of 22m/s, at an angle of 34 degrees above the horizontal. At that instant, the reciever is 21 m from the quarterback. The acceleration of gravity is 9.8 m/s ^2. WIth what constant speed should the reciever run in order to catch the football at the level at which it was thrown? Answer in units of m/s.

2007-09-14 05:38:15 · 2 answers · asked by Jaweida S 1

the top of the cliff so that she will miss the ledge at the bottom, which is 1.50m wide and 9.50m below the top of the cliff? And what must the divers initial speed be in milers per hour?

2007-09-14 05:22:41 · 1 answers · asked by brandon patrick 1

A projectile of mass 0.552 kg is shot from a
cannon, at height 7 m,
with an initial velocity vi having a horizontal
component of 5 ms.
The projectile rises to a maximum height of
Y above the end of the cannon's barrel and
strikes the ground a horizontal distance X
past the end of the cannon's barrel.
The acceleration of gravity is 9.8 ms^2 :

Determine the vertical component of the
initial velocity at the end of the cannon's bar-
rel, where the projectile begins its trajectory.
Answer in units of ms.

Determine the maximum height Y the pro-
jectile achieves after leaving the end of the
cannon's barrel. Answer in units of m.

Find the magnitude of the velocity vector
when the projectile hits the ground. Answer
in units of ms.

Find the magnitude of the angle (with repect
to horizontal) the projectile makes when im-
pacting the ground. Answer in units of degree.

Find the range"x" of the projectile. Answer
in units of m.

2007-09-14 05:19:01 · 1 answers · asked by Jaweida S 1

2007-09-14 05:18:14 · 3 answers · asked by Jarod S 2

Short answer is needed for the above question

2007-09-14 05:14:49 · 6 answers · asked by hina_khawar82 1

Can we have another worlds from phyisics sience view ?
please explain...

2007-09-14 04:08:35 · 5 answers · asked by Anonymous

point?

2007-09-14 03:47:12 · 4 answers · asked by Pascal 4

We step up electricity to reduce heat loss while transmitting over long distances. The heat loss is given by I^2Rt. While stepping up the current is decreased and thus heat loss is reduced. All Right.
But what if we use Ohm's law V = IR here? Now I^2Rt becomes V^2t/R. Then when we step up the voltage the Heat Loss is increased considerably. Can someone please explain this?

2007-09-14 03:46:50 · 5 answers · asked by Nivvedan 2

Find: (a) the time before it hits the ground; (b) the range; and (c) the maximum height that it reaches during its flight.

2007-09-14 03:37:51 · 2 answers · asked by Pascal 4

If I tried it on everything plugged in for 1 hour at 140% voltage, what kinds of things would I see?

http://s223.photobucket.com/albums/dd78/floodtl/?action=view¤t=SmallVariac.jpg

2007-09-14 03:21:06 · 4 answers · asked by Anonymous

I belive it is not possible but would like to confirm this. Thank you.

2007-09-14 03:11:38 · 12 answers · asked by clanger 1

and can u tell me the formula

2007-09-14 03:05:03 · 1 answers · asked by volcom7667 1

when they both put in a freezer compartment of the refrigerator.why is it the warm water will turn into ice first compare to the room temperature.water

2007-09-14 02:27:30 · 4 answers · asked by Anonymous

so would it get hit and die or just get hit and since it's so small nothing happens and it just blows away

2007-09-14 02:06:11 · 14 answers · asked by Anonymous

2007-09-14 01:48:05 · 5 answers · asked by Anonymous

2007-09-14 01:39:52 · 4 answers · asked by JazzieJones 1

Examples would be much appreciated.

Here is one example: The matrix: flying and engaging in fights midair violates the laws of physics.

2007-09-14 01:17:43 · 3 answers · asked by Anonymous