Science & Mathematics - 5 September 2007

A grasshopper makes four jumps. The displacement vectors are (1) 22.0 cm, due west; (2) 27.0 cm, 43.0 ° south of west; (3) 29.0 cm, 59.0 ° south of east; and (4) 26.0 cm, 54.0 ° north of east. Find (a) the magnitude and (b) direction of the resultant displacement. Express the direction as a positive angle with respect to due west.

2007-09-05 20:25:22 · 4 answers · asked by lonelygirlinhell 1 in Mathematics

A grasshopper makes four jumps. The displacement vectors are (1) 22.0 cm, due west; (2) 27.0 cm, 43.0 ° south of west; (3) 29.0 cm, 59.0 ° south of east; and (4) 26.0 cm, 54.0 ° north of east. Find (a) the magnitude and (b) direction of the resultant displacement. Express the direction as a positive angle with respect to due west.

2007-09-05 20:24:15 · 3 answers · asked by lonelygirlinhell 1 in Physics

2007-09-05 20:22:38 · 3 answers · asked by LeFthAndeD 1 in Other - Science

2007-09-05 20:19:28 · 2 answers · asked by Cheese me 1 in Mathematics

2007-09-05 20:19:01 · 2 answers · asked by Anonymous in Mathematics

to solve such questions,one should use the reciprocal identities, pythagorean identities, and ratio identities. the number "2" found beside the word "cot" is an exponent.

2007-09-05 20:18:57 · 2 answers · asked by Anonymous in Mathematics

Determine the arc length of the asteroid given parametrically by

x(t) = 5 cos^3 (t)
y(t) = 5 sin^3 (t)



PLEASE show me the steps!

2007-09-05 20:15:23 · 2 answers · asked by Anonymous in Mathematics

[2(y+1)^1/2 - y(y+1)^-1/2] / (y+1) = ?

2007-09-05 20:11:55 · 5 answers · asked by i<3WL 2 in Mathematics

2007-09-05 20:05:34 · 7 answers · asked by lara croft 2 in Physics

2007-09-05 20:04:23 · 7 answers · asked by kool2girl 1 in Medicine

Can anyone tell me how to do this problem?

Find the slope of the line passing through the x-intercept of -4 and the y-intercept of -9.

2007-09-05 19:54:23 · 5 answers · asked by Vonnie 2 in Mathematics

2007-09-05 19:49:39 · 3 answers · asked by wjditv 1 in Physics

2007-09-05 19:43:50 · 11 answers · asked by livedie_askme 1 in Physics

2007-09-05 19:31:59 · 4 answers · asked by Anonymous in Mathematics

Please provide reference. the person who respond the quickest with the most correct answer will get the 10 pts they derserve

2007-09-05 19:25:52 · 3 answers · asked by Donni D 2 in Physics

I started on my antibiotics after my wisdom tooth surgery. I stopped halfway because suddenly a fear struck in me what if it contains animal origins.( i am a vegetarian when it comes to medicines) But upon asking other Yahoo! users, this fear was untrue, they say. I want to thank them.
The problem now is:
So if I continue to take the antibiotics NOW, after a gap of about 7 days, will

1. it bring harm to me?
2. the antibiotics have the same desired effect as if I did not stop half way?

What is the maximum number of days that we can have a lull in consumption in order for the antibiotics to work?

The antibiotics/medicines are:
1. Amoxycillin (Capsules BP 250mg) (Pulmoxyl-250)
2. Metronidazole (200mg)
3. MEFENAMIC ACID (250MG)
4. FAMOTIDINE (20MG)

Hope you can help me. Thanks for your advice.

2007-09-05 19:23:09 · 3 answers · asked by Mari 1 in Medicine

Now my real question is why aren't we all sucked up and out through the so-called "hole in the ozone"...or better yet, through the hole that a space ship creates when it breaks out of our atmosphere?....Just wondering...

2007-09-05 19:20:47 · 3 answers · asked by Anonymous in Astronomy & Space

2007-09-05 19:14:37 · 2 answers · asked by deepak_8584 1 in Engineering

I could have swore i seen one last friday when my friends cat went missing, i was sitting on my balcony drinking some pop, when i seen a shadowy figure reach out and grab my friends cat and then disappeared into the sewer enterance, i have been in those sewers when i was a kid, someone said there was a dead body down there so me and my friends climbed down there to see if we could find it, what we seen down there was kind of cool, the newer sewers connected to some older tunnels that led into larger man made caverns that later i found out were old basements that were covered over when the apartment block was put up, they tore down some of the old heritage houses that could be fixed up, and just plowed them under leaving the basements still there, anyway i think mole men live down there surviving by eating stray cats and dogs.

2007-09-05 19:09:08 · 17 answers · asked by Anonymous in Paranormal Phenomena

a) How many kiloliters will pass a given point in one day?

b) If sodium hypochlorite solution conataining 10% available chlorine is being used to chlorinate this main, at what rate (liters/hour) will the sodium hypochlorite be applied to achieve a dose of 1.5mg/L chlorine ?

nedd to see the showing out

Please help

2007-09-05 19:05:25 · 2 answers · asked by Anonymous in Mathematics

2007-09-05 19:04:51 · 21 answers · asked by truthfinder 2 in Astronomy & Space

I've read(somewhere) that only about 20% of med school applicants get accepted. Now, does that mean for each school, the average rate of acceptance is 20% but the applicants can still apply elsewhere or that only 20% of all med school applicants will actually go to med school?

2007-09-05 18:57:57 · 4 answers · asked by taelorcorey00 1 in Medicine

Alienology?

2007-09-05 18:48:30 · 8 answers · asked by Anonymous in Astronomy & Space

Question 1

Two bicyclists, starting at the same place, are riding toward the same campground by different routes. One cyclist rides 1280 m due east and then turns due north and travels another 1830 m before reaching the campground. The second cyclist starts out by heading due north for 1480 m and then turns and heads directly toward the campground. (a) At the turning point, how far is the second cyclist from the campground? (b) What direction, measured as a positive angle relative to due east, must the second cyclist head during the last part of the trip?

Question 2
A person is standing at the edge of the water and looking out at the ocean. The height of the person's eyes above the water is h = 1.9 m, and the radius of the Earth is R = 6.37 x 106 m. (a) How far is it to the horizon? In other words, what is the distance d from the person's eyes to the horizon? (Note: At the horizon the angle between the line of sight and the radius of the earth is 90°.)

2007-09-05 18:37:16 · 3 answers · asked by ? 2 in Mathematics

it's for chemistry-- Any info IS helpfull!!! yes, it is a hw question,, i know,,, i know.. sadly this is my only hope..
thank's for reading... good night--

2007-09-05 18:34:16 · 10 answers · asked by ren b 1 in Mathematics

A coffee manufacturer want to market a new blend of coffee that will cost $3.90 per pound by mixing two coffees that sell for $2.75 and $5 per pound, resptively. What amounts of each coffee should be blended to obtain the desired mixture? Assume that the total weight of the desired blend is 100 pounds....i dont get this one at all please tell me how to get the the answer...i just dont want the answer itself...thanks

2007-09-05 18:32:08 · 5 answers · asked by Christine V 1 in Mathematics

how do i write the equation of this reaction? any help would be great!

2007-09-05 18:27:05 · 8 answers · asked by Anonymous in Chemistry

anything paranormal

2007-09-05 18:20:58 · 29 answers · asked by Anonymous in Paranormal Phenomena

Well as school has started once again and I basically lost most of my knowledge on astronomy (and my friend stole her book back) I need to know some good textbooks or just regular books that I can buy secondhand so I can study from them. Thanks :)

Oh and I'm not a beginner/novice, so please don't recommend something like Astronomy for Dummies :D

2007-09-05 18:19:08 · 5 answers · asked by Anonymous in Astronomy & Space

Find the standard form of the equation of the circle having the following properties:

Center at the origin
Containing the point (-4,1)

2007-09-05 18:12:17 · 5 answers · asked by lifeiscake 3 in Mathematics