Physics - November 2006

whose area is 14.2 m^2 if the speed of flow is 392 m/s across the top of the wing, and 248 m/s across the bottom?
Use an air density of 1.29kg/m^3. (Ans. in units of N.)

2006-11-22 05:46:59 · 2 answers · asked by Dee 4

2006-11-22 05:36:19 · 7 answers · asked by chylia c 1

The type of metal when two dissimilar metals are in contact when a electric charge is applied the one metal propels itself.

2006-11-22 05:36:15 · 2 answers · asked by Anonymous

a) A skier is accelerating down a 30.0° hill at a = 2.80 m/s2 (Fig. 3-36). What is the vertical component of her acceleration?
m/s2 down.
(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 305 m?
s

2006-11-22 05:05:58 · 5 answers · asked by ckielblock18 1

The coefficient of kinetic friction is 0.60 (the slope angle is 60°).

What is the acceleration of the block if
(a) it is sliding down the slope, and
m/s2
(b) it has been given an upward shove and is still sliding up the slope?
m/s2

2006-11-22 05:04:49 · 3 answers · asked by ckielblock18 1

A 1400 N crate is being pushed across a level floor at a constant speed by a force F of 300 N at an angle of 20° below the horizontal a) What is the coefficient of kinetic friction between the crate and the floor?

(b) If the 300 N force is instead pulling the block at an angle of 20° above the horizontal as shown in Figure P4.31b, what will be the acceleration of the crate. Assume that the coefficient of friction is the same as found in (a).
m/s2

2006-11-22 05:03:01 · 1 answers · asked by ckielblock18 1

hi..all iam unable to understand the physical meaning of moment of inertia .can anybody plz help me..give clear idea..how it is derived and clear definition (not interms of mass multiplied by distance^2)....thansk to all in advance..

2006-11-22 04:59:00 · 1 answers · asked by hiris(Hi..RiSK) 1

2006-11-22 04:49:41 · 10 answers · asked by Anonymous

1) If any apparatus placed with in a hollow charged metal enclosure, why is it shielded from elctric field?

2) we always connect a negative terminla with a positive terminal right? or not?

2006-11-22 04:38:34 · 4 answers · asked by Anonymous

When you consider everything that you see as you look around, it becomes clear that you are being bombarded by a seemingly constant and infinite number of photons from every possible direction---not to mention any other massless particles that are NOT light. Any ONE particle will cause a pressure on contact, albeit barely there. But if you take into account the SUM TOTAL of such particles flying all over the universe, it wouldn't seem unreasonable that on a large enough scale that the SUM pressure exerted on any given object with mass may be large enough to result in what we see as GRAVITY. The amount of pressure this field of particles could exert would be dictated by the mass that these paricles hit. More mass, and the particles hit with a little more energy. Put a smaller mass next to a larger one and the acceleration caused by the larger mass will actually cause particles to push the smaller mass towards the next largest mass. The spacetime curve would be coincidental.

2006-11-22 03:58:14 · 9 answers · asked by Anonymous

2006-11-22 03:44:18 · 28 answers · asked by biman c 1

I can prove that domain theory in magnetism is wrong and it can be modified also concept of lines of force is also wrong by an expariment and logic.

2006-11-22 03:35:54 · 7 answers · asked by mohammad s 1

2006-11-22 03:14:55 · 8 answers · asked by Rakesh Menon 1

I know its called Combustion but wat is the state of the flame???

2006-11-22 02:48:23 · 32 answers · asked by TOM 2

I am working on at 'a' level standard so please be spacific with technical info. Thank you

2006-11-22 02:36:04 · 14 answers · asked by posty 1

Why does The Coriolis effect deflects objects moving along the surface of the Earth to the right in the Northern hemisphere and to the left in the Southern hemisphere?
Please Explain it with a suitable experiment

2006-11-22 00:33:01 · 9 answers · asked by Nevski 2

A body is thrown downward with aninitial speed of 20 m/s on earth. What is the
A. Acceleration of the object
b. Displacement after 4 seconds
c time required to reach a speed of 50 m/s

i need the answers but also show me how you get them. thanks

2006-11-22 00:27:40 · 4 answers · asked by Anonymous

system is in equilibirium. What is the location, magnitude and sign of 3rd charge?

2006-11-22 00:22:53 · 2 answers · asked by chatter p 1

2006-11-21 23:18:51 · 2 answers · asked by chukchuk 1

2006-11-21 23:04:25 · 21 answers · asked by Sandi 1

I mean the t.v still holds some charge in it once switched off,does this energy just disappear?

2006-11-21 21:19:21 · 9 answers · asked by Anonymous

In the 1968 Olympics in Mexico City, Bob Beamon shattered the world long jump record with a jump of 8.90m. His speed on take-off was measured at 9.5m/s, about equal to that of a sprinter. How close did he come to achieving maximum range for his speed in the absence of air resistance? The value of g (gravity) in Mexico City is 9.78m/s/s.
(Please show how you got the answer!! Best Responce gets 10 points!!)

2006-11-21 21:15:11 · 4 answers · asked by Brody 3

for example how much lumens value in a 14 lux light?

2006-11-21 20:41:45 · 4 answers · asked by wakiz50 1

2006-11-21 20:36:52 · 10 answers · asked by Friend 1

2006-11-21 19:52:12 · 6 answers · asked by kooshal 2

2006-11-21 19:44:20 · 7 answers · asked by cute gal 1

Is newtons 2nd law wrong?

i take a table of mass m and force a block of mass m on it . table breaks out but doesnt the block.where is the rxn force.u cant say there is a mass diff causing it not to work.

2006-11-21 17:59:55 · 10 answers · asked by archit p 1

How is surface tension illustrated by water on a coin?

Thank You

2006-11-21 17:40:31 · 1 answers · asked by flippy g 1

2006-11-21 17:12:20 · 10 answers · asked by Friend 1

2006-11-21 15:41:18 · 10 answers · asked by Anonymous