Physics - September 2007

Could we be witnessing evoloutions finest hour?

2007-09-01 18:01:58 · 15 answers · asked by james h 2

i have a lab physic started on tuesday and i have read the lab instruction before the lab starting i dont quite understand implied uncertainty

here is a question

1.23 cm have 3 ( place accuracy) ........ +/- .005 ( implied C)
108.7 cm ...... 4 ........................................+/- .05cm
45,000 people...........2..............................+/- 500 people

my question is , how do you figure out implied uncertainty , can you explain to me please help me out
i am appreciated any participates

2007-09-01 17:56:48 · 3 answers · asked by jennifer 2

I have many electronics in my room like a laptop, tv, speakers amps, and much more. Will I be at a higher risk of radiation cancer or like what could happen?

2007-09-01 17:54:03 · 1 answers · asked by icecream1343 2

Please Help me to answer these questions!!.. THX a LOTTTT!!

A lift of mass 480kg to carry a max. load of 3000N. Calculate the tension in the lift cable at maximum load when,
a. the lift moves downward at steady speed
b. the lift moves downward, accelerating at .15m/s^2
c.The lift moves upward, accelerating at 1.5m/s^2

Thank you sooooooo muccchh!!...

2007-09-01 17:33:11 · 2 answers · asked by DimzDimz 1

Use unit vectors to express the vector C, where C = 3.00 A - 4.00 B

I figured out some of the problem I found A to equal 1.41i + 3.31 j and I found B to equal -2.08i + -1.2 j

* but I cant figure out how to find C, and once I find Vector C's i and j, I then need to find the magnitude and direction of C.......... Lost, Phsyics is hard,

2007-09-01 16:12:54 · 4 answers · asked by Walachka 3

when project any thing up it will fall down due to gravitational
pull of the earth,then how the planes fly up without falling down

2007-09-01 15:47:49 · 11 answers · asked by Anonymous

A circular ring of charge of radius a and total charge Q lies in the x-y plane with it center at the origin. The direction of the force on a very small segment of this ring is directed __________ if Q is negative.


a. inward toward the origin
b. outward from the origin
c. along the negative z-axis
d. in no direction since the force is zero

Thanks!

2007-09-01 14:54:33 · 3 answers · asked by Anonymous

2007-09-01 14:46:29 · 3 answers · asked by Anonymous

what percentage of the volume of a hydrogen atom is protons? assume the atom is a sphere and the volume of a sphere is 4/3(pi)r^3

2007-09-01 14:40:11 · 2 answers · asked by Anonymous

Or is it possible that the wavelength can be infinitely small or big? Considering that fractions can be an infinite number (.0000001 you can have an infinite amount of zeros making an infinite amount of fractions). If so, do any stars in our solar system emit any other types of waves then those in the known Electromagnetic spectrum?

2007-09-01 14:32:43 · 2 answers · asked by Be My Angel :] 4

could you please enlighten me on the energy aspects involved with the reverse bungee?

thank you!

2007-09-01 14:23:49 · 3 answers · asked by Tumblin'Monkey 3

can someone please tell me an equation to find initial velocity and acceleration?

2007-09-01 14:14:30 · 4 answers · asked by Adse P 1

A parachutist descending at a speed of 15.0 m/s loses a shoe at an altitude of 30.0 m. (Assume the positive direction is upward.)
(a) When does the shoe reach the ground?
s
(b) What is the velocity of the shoe just before it hits the ground?
m/s

2007-09-01 13:55:47 · 2 answers · asked by Discover 2

2007-09-01 13:52:05 · 1 answers · asked by Anonymous

someone please help me with this one.
an insect crawls along the edge of a rectangular swimming pool of length 27 m and width 21m. if it crawls from corner A to corner B in 30 min. What is magnitude of its average velocity?

2007-09-01 13:12:59 · 2 answers · asked by Adse P 1

A boy runs 30m east, 40m north, 50m west.

2007-09-01 13:11:47 · 0 answers · asked by Jeff 1

A quantic clone is a clone from a parallel universe. I want to know what would happen if you meet him/her

2007-09-01 13:04:25 · 11 answers · asked by davichito 1

Assuming you are not hit with shrapnel from the bomb itself, and are not killed by any other type of debris what actually kills you when a bomb is detonated near you?

2007-09-01 12:03:39 · 9 answers · asked by Cheeks 2

2007-09-01 09:19:30 · 6 answers · asked by Yahoo Sucks 5

It is generally misunderstood by general public that if Einstein didn't exist, there is no Theory of Relativity. But it's not true. Other great physicist like Niels Bohr surely would have discovered it without him. The question is, how many years later? I would say 5 years?

2007-09-01 08:57:33 · 7 answers · asked by Sei Kameoka 1

2007-09-01 05:30:24 · 9 answers · asked by Sigma 1

More homework- need answers today or tomorrow! I think its something to do with boyancy or upthrust..... need more detail!

2007-09-01 05:03:37 · 15 answers · asked by Sez 3

if so, how?

2007-09-01 04:54:05 · 8 answers · asked by street fighter 1

2007-09-01 04:34:39 · 6 answers · asked by Anonymous

In Simple vocab. please ( For homework)

2007-09-01 04:33:26 · 7 answers · asked by Sez 3

I'm watching this movie one the Sci-fi Channel, Tidal Wave-No Escape, and each tidal wave comes in with no warning at all. It doesn't seem realistic. Can they do that, come in without warning?

2007-09-01 04:31:49 · 2 answers · asked by merlin_steele 6

I mean by using simple formula in pysics, is there any possibility to predict the coming earthuake?

2007-09-01 04:30:40 · 5 answers · asked by lit-the-light 2

What is your perspective on the origin of consciousness? Do you beleive that science can make reasonable considerations on what the origin of consciousness is?

2007-09-01 04:16:07 · 5 answers · asked by Lindsey H 5

Can sum1 plz temmme wht d difference betn elastic n inelastic collision is?

2007-09-01 03:58:14 · 2 answers · asked by Anonymous

It may be true on earth but is it possible it may not other places in the universe?

2007-09-01 03:40:04 · 5 answers · asked by mrkittypong 5