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Science & Mathematics - 14 November 2007

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A string has a linear density of 6.40 10-3 kg/m and is under a tension of 280 N. The string is 1.9 m long, is fixed at both ends, and is vibrating in the standing wave pattern shown below in the drawing.

(a) Determine the speed of the traveling wave.
m/s

(b) Determine the wavelength of the traveling wave.
m

(c) Determine the frequency of the traveling wave.
Hz

http://img136.imageshack.us/img136/3117/p1729xj0.gif

2007-11-14 02:54:17 · 2 answers · asked by Jeff 4 in Physics

The mass of a string is 3.30 10-3 kg, and it is stretched so the tension in it is 110 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?

2007-11-14 02:52:16 · 1 answers · asked by Jeff 4 in Physics

Evaluate the limit using L'Hopital's rule.

a) lim(as x--->0) of [7^(x)-14^(x)] / x
Evaluate the limit using L'Hopital's rule twice!
ans=______?

b) lim(as x--->0) of ( e^(9x)-1-9x) / (-9x^2)
Evaluate the limit using L'Hopital's rule if necessary
ans=______?

c) lim(as x--->1) of (7x+9) / (14x-9)
ans=______?

2007-11-14 02:45:12 · 1 answers · asked by Hinal P 1 in Mathematics

The drawing shows two graphs that represent a transverse wave on a string. The wave is moving in the +x direction. Using the information contained in these graphs, write the mathematical expression (similar to Equation 16.3 or 16.4) for the wave. (Answer in terms of t and x. Assume standard units.)

y= ?

http://img134.imageshack.us/img134/8081/1626altli8.gif

2007-11-14 02:44:30 · 1 answers · asked by Anonymous in Physics

What is heavy water how does it siffer from tap water, what is its mol wt what is its formula what is it used for?

2007-11-14 02:39:28 · 13 answers · asked by Peter T 2 in Physics

meaning of the crashbandicoot may be explain

2007-11-14 02:36:03 · 2 answers · asked by Nachimuthu A 1 in Agriculture

what was the point of castles ? i have visited many of these the last one being calavelock in dumfries and galloway. what i cant grasp is when an invading force arrived why didnt they just walk round it and do their pillaging or whatever without having to lay siege to these buildings and also do a full frontal attack and loose many lives . so what was the point of these buildings.

2007-11-14 02:35:47 · 13 answers · asked by Anonymous in Geography

what dp nurses do? what are jobs at the hospitol that u dont have to give shots, where u only do check ups?

2007-11-14 02:33:01 · 6 answers · asked by irfeni 1 in Medicine

I forgot the equation to find x when you can't factor the polynomial... x = [b +/- sq.rt (.... - 4ac)] / 2a... Can anyone help me fill in the blank. Thanks!

2007-11-14 02:26:35 · 13 answers · asked by Anonymous in Mathematics

2007-11-14 02:25:12 · 8 answers · asked by irene c 2 in Astronomy & Space

For this equation...

6x + 2y = 11

Would the slope intercept form be 2y = -6x + 11? Also, how would I find the equation, in slope intercept form, for the line that is parallel to this line and passes through the point (9, -15)?

2007-11-14 02:24:56 · 2 answers · asked by Anonymous in Mathematics

1. Find the distance of 5x - 12y = 26 from the origin

2.Find the distance between the line 5x -12y = 26 and the point A( 3,-2)

Please Help ASAP!
Many Thankings xx

2007-11-14 02:21:47 · 5 answers · asked by Jessa 2 in Mathematics

Reptiles have been around for millions of years, but they're cold-blooded and don't do well in cold temperatures, which is why you find them commonly in Africa and Australia, but less commonly in Canada and Norway! So, my question is how did they manage to survive throughout the Ice Age? Obviously they did, because we still have snakes, crocodiles and lizards all still around.

2007-11-14 02:17:02 · 8 answers · asked by Anonymous in Zoology

b) The total number of different electrical patterns the brain can produce?

If the answer to a) is x, and the answer b) is y, what is the ratio of y to x?

2007-11-14 02:10:46 · 5 answers · asked by Anonymous in Astronomy & Space

How can there be smallest distance for space?

Do you think this is just a mathmatical "trick" in order for physicists to fit all the pieces together in their theory of "everything"?

String theory seems to have a lot of mathmatical necessities that seems to be just contrived in order to fit all the pieces together.

It's more a philosophy than science!

2007-11-14 02:02:54 · 4 answers · asked by Anonymous in Physics

I need to show that fn(x)=cos(x/n) converges uniformly to f(x)=1 for x in [0, pi]. I need help finding an n from the inequality
|cos(x/n) - 1| < eps

Thanks...

2007-11-14 01:54:41 · 2 answers · asked by linzaroo06 1 in Mathematics

2007-11-14 01:48:37 · 2 answers · asked by Ali Mazhar Kazmi 1 in Geography

And is there even any logic behind Astrology or someone just came up with idea of predicting future by looking at stars because they were bored?

2007-11-14 01:39:45 · 6 answers · asked by E=MCPUNK 3 in Astronomy & Space

2007-11-14 01:37:16 · 9 answers · asked by Tanmay B 1 in Geography

like.. i want you to recommend fuels for the launch vehicles, on-orbit vehicles..... separately witha the reasons for their selection.

2007-11-14 01:37:07 · 4 answers · asked by jollyworld! 2 in Astronomy & Space

A pendulum of length L1 has a period T1 = 0.850 s. The length of the pendulum is adjusted to a new value L2 such that T2 = 1.50 s. What is the ratio L2/L1?

2007-11-14 01:32:26 · 1 answers · asked by colin.muller 1 in Physics

all that matters is that we got it, not showing how.

2007-11-14 01:30:32 · 17 answers · asked by I hate Hillary Clinton 6 in Mathematics

http://www.youtube.com/watch?v=MSSpigcJrS0

Would Utah change the name of its capitol its to Salt Lake Pineapple?

Would you listen to the Pineapple Choir?

2007-11-14 01:27:11 · 5 answers · asked by Anonymous in Engineering

Compressive strength of our bones is important in everyday life. Young's modulus for bone is about 1.4 x 10^10 Pa. Bone can take only about a 1% change in its length before fracturing.

a) What is the maximum force that can be applied to a bone whose minimum cross-sectional area is 3 cm^2? (This is approximately the cross-sectional area of a tibia, or shin bone, at its narrowest point.)

b) Estimate the maximum height from which a 70 kg man could jump and not fracture the tibia. Take the time between when he first touches the floor and when he has stopped to be 0.03 s, and assume that the stress is distributed equally between his legs.

Thanks for the help!!!

2007-11-14 01:25:37 · 2 answers · asked by zoro-kun 2 in Physics

If not, then what was here before the universe?

2007-11-14 01:24:44 · 38 answers · asked by Jim 7 in Astronomy & Space

2007-11-14 01:18:41 · 4 answers · asked by mit 2 in Biology

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