Physics - January 2007

choices:

1/3 walts
1 walts
3 walts
48 walts

2007-01-26 05:55:32 · 5 answers · asked by Anonymous

If you have a warm steel sphere approximately the size of a baseball and cause cool air to flow past it - at what velocity will the heat gained by air friction balance with the heat lost to "wind chill" so that the sphere's temperature remains constant?

2007-01-26 05:45:58 · 7 answers · asked by elycanoe 1

Hi,

I was wondering how I would find the electric field strength inside a parallel-plate capacitor. I have been trying to find an equation, but seem to fall short. The electric field strength should be in units of V/m.

Thanks!

2007-01-26 05:35:15 · 3 answers · asked by Anonymous

does the angle of the solar panel also contribute to the factor

2007-01-26 05:28:27 · 5 answers · asked by mardhiah a 1

2007-01-26 05:23:25 · 9 answers · asked by damilola o 1

I read a book about some years ago where the us navy tried to make a warship invisible.This was meant to have taken place in a Philadelphia naval base, and I think it was based on Einstein's Unified Field Theory?
Doeas anybody know if this experiment took place?

2007-01-26 05:20:53 · 9 answers · asked by spamalot 1

Can an object's velocity changwe direction when its acceleration is constand. support your answer with an example.
A) No this is not possible ebcause its always speeding up.
B) No this is not possible becayse its always speeding or always slowing but it can never turn around
C) yes, thi sis possible and the car that starts from rest speeds up, slows to a stop and then backs up is an example
D) Yes, this is possiblr a rock thrown straight up is an example.

2007-01-26 05:15:55 · 3 answers · asked by Julie Kim 1

2007-01-26 05:09:41 · 3 answers · asked by rav 2

plz ppl ineed help in this question and how to do it plz by tom plz i need help badly

2007-01-26 05:01:23 · 10 answers · asked by sufikanchan92 1

2007-01-26 04:59:47 · 32 answers · asked by Drop the donkey 2

a.) zero

b.) weak

2007-01-26 04:47:15 · 4 answers · asked by Unknown 1

2007-01-26 04:39:01 · 3 answers · asked by Anonymous

you get to something without actually touching it?

2007-01-26 04:30:30 · 5 answers · asked by Philip McCrevice 7

d follwing quest. r for 9th class n for physics n maths questions try to even give d working plz
d follwing quest. r for 9th class n for physics n maths questions try to even give d working plz
1.striped muscles r held togeder by:
a)areolar connective tissue
b)adipose tissue
c)white fibrous tisssue
d)yellow fibrous tissue

2.mitochondria r d seat of :
a)aerobic respiration
b)anaerobic respiration
c)fermentation
d)diffusion

3.which meristem give rise to vascular tissue
a)apical meristem
b)lateral meristem
c)intercalary meristem
d)special tissue

4.which tissue forms tendons
a)areolar tissue
b)adipose tissue
c)white fibrous tissue
d)yellow firbrous tissue

5.if d earthh expands such dat the radius bcomes 4 times its present value, wat shud b d value of density 'D' so dat d acceleration due to gravity 'g' remains constant
a)4D
b)d/4
c)D/3
d)4/3D^2

6.wat wud b d minimum horsepower rqrd to raise a lift of mass 400kg at a constant velocity of 0.25 m/s^2
a)980hp
b)746hp
c)1.5hp
d)1.3hp

2007-01-26 04:28:49 · 10 answers · asked by payal j 1

2007-01-26 04:18:54 · 5 answers · asked by Anonymous

2007-01-26 04:18:05 · 10 answers · asked by Rajinder S 1

If you write some internet address for me about animations of this subject,it will be better!

2007-01-26 03:53:02 · 7 answers · asked by Anonymous

Please help, thank you!!

2007-01-26 03:46:58 · 6 answers · asked by Anonymous

In case of that a microwave oven[220VAC,2.45mhz,,900watt] would be connected to the 110VAC power sourse, what would be the results of the followings?
[1] 2.45mhz will be not changed, the 900watt power onlly will be
reduced to the 450watts.
[2] 2.45mhz will be changed, also the 900watt power will be
reduced to the 450watts.
[3] the oven will be not operated
[4] There are not answer on the aboves, The result wil be as followings[please specify}

2007-01-26 03:35:06 · 4 answers · asked by wisaz00 1

Ok, so we don't leave them at the toilet, do we?

I wonder what kind of an energy do the kilos we lose turn into.

2007-01-26 03:33:21 · 5 answers · asked by Anonymous

2007-01-26 03:29:58 · 5 answers · asked by DutchDave 2

jim burne need ur help again

2007-01-26 03:08:38 · 1 answers · asked by mustafizur15 1

2007-01-26 03:07:54 · 1 answers · asked by Anonymous

2007-01-26 02:42:08 · 9 answers · asked by Anonymous

An object held in the air as a GPE of 470J. The object then is dropped. Half way down, what is the object's kinetic energy?

2007-01-26 02:41:58 · 1 answers · asked by Jillian O 1

does it mean that tension is greater than mg? and what is the direction of acceleration

2007-01-26 02:41:55 · 6 answers · asked by Anonymous

Do you think we each have a mission?

2007-01-26 02:23:48 · 3 answers · asked by Gypsy Gal 6

A 5kg object is released from a resting hieght of 12m on a curved frictionless ramp, at the bottom of the ramp is a spring with a force constant of 150 N/m. the object slides down the ramp and compresses the spring to point z on the spring before coming to rest.

Find Z
DOes the object continue to move after it comes to rest?
If yes how far will it go up the slope before coming to rest?

2007-01-26 02:19:26 · 2 answers · asked by ??? 4

i m makin a project on firealarm,can anyone tell me bout its working or refer to some site which has the useful info? & yep i've already searched wikipedia

2007-01-26 01:45:30 · 3 answers · asked by evil_vision 2

its a proven scientific fact...but nobody knows why. so, why?

2007-01-26 01:43:33 · 13 answers · asked by V3CK!N 1