Science & Mathematics - 15 November 2007

2007-11-15 23:55:20 · 3 answers · asked by hulkmaina_18 1 in Engineering

1. Find the resultant vector (value and angle) when the following two vectors are added together:
R1 = 22.4 m, θ = 26.6 degrees
R2 = 29.2 m, θ = 59 degrees

2. Find the resultant vector (value and angle) when the following two vectors are added together:
R1 = 40.3 m, θ = 7.1 degrees
R2 = 15.0 m, θ = -180 degrees


Answers:
1. |R| =
θ =
2. |R| =
θ =


***She gave us this link but i dont know how to use this thing... i am horrible at physics or anything to do with math related questions....

http://phet-web.colorado.edu/simulations/vectormath/vectorMath.swf

2007-11-15 23:53:07 · 3 answers · asked by Anonymous in Physics

c o n d o m s etc

2007-11-15 23:49:22 · 1 answers · asked by Anonymous in Medicine

Why would the pH i.e the hydrogen ion concentration of a solution affect its redox potential? Similarly why would the compound concentration (the concentration of the chemical species itself) affect the redox potential?

2007-11-15 23:47:00 · 3 answers · asked by Anonymous in Chemistry

How do I integrate the following?

(4+5cos^2(theta) ) ^ .5

2007-11-15 23:24:45 · 1 answers · asked by Anonymous in Mathematics

2007-11-15 23:20:32 · 5 answers · asked by Anonymous in Chemistry

2007-11-15 23:18:33 · 5 answers · asked by subtle_butterfly 1 in Weather

I heard about the Cyclone that hit somewhere across the ocean and killed more than 200 people and i was just wondering what a cyclone was.

2007-11-15 23:14:19 · 6 answers · asked by Anonymous in Weather

Thank GOD for monsanto .You dont think Monsanto could be killing the bees off do ya ,they would have to be really evil to do that !

2007-11-15 23:13:36 · 9 answers · asked by Anonymous in Zoology

if someone was sedated would it erase their memory for the hours preceding their sedation?

2007-11-15 23:13:08 · 5 answers · asked by Anonymous in Medicine

This is something that bothers me. If the world was flat, where does all the of the flowing ocean water go? Remember that sometime before, the Greeks and the Europeans believed that the world was flat. I'm just curious, have they not thought of that?

2007-11-15 22:56:52 · 3 answers · asked by Sir Cairo 3 in Earth Sciences & Geology

Hi.
I have an earthquake question which would be best answered by a geologist in the community. Members who know the answer that is CORRECT are welcomed!!!
Q1: Do the earthquakes happen randomly or is there a pattern to their locations? Explain your answer.
Q2: State what conclusion you can draw about the pattern of earthquakes and its fit to other global patterns of the Earth's crust. Be very specific and detailed in your conclusion.
Thankyou in advance!

2007-11-15 22:49:43 · 4 answers · asked by Hassan 5 in Earth Sciences & Geology

2007-11-15 22:46:31 · 5 answers · asked by khorshid 1 in Geography

the rainbow is always curved

2007-11-15 22:44:50 · 14 answers · asked by watatata 1 in Astronomy & Space

1 kilometer=1000 meter
1 meal=? meter / Kilometer

2007-11-15 22:41:41 · 5 answers · asked by mbasem_80 1 in Astronomy & Space

2007-11-15 22:40:05 · 13 answers · asked by ♥meRi.aN♥ 2 in Chemistry

I have studied these planets in great detail and I have trouble grasping the fact that they have no solid surface,, Suppose we took a solid metal ball and dropped it into one of these giants what would it eventually hit?? would it hit anything solid?? It seems that it would have to have a solid core of some kind ! am I right on this??

2007-11-15 22:31:11 · 9 answers · asked by SPACEGUY 7 in Astronomy & Space

2007-11-15 22:25:54 · 21 answers · asked by Anonymous in Astronomy & Space

i need a little help with this problem

find the area of the shaded reagion for each standeard normal curve.the area to the left of z=-1.34 is 0.0901 and the area to the left of z=2.01 is 0.9778. how did they get 0.977 and 0.0901

2007-11-15 22:07:51 · 1 answers · asked by maxmac97 1 in Mathematics

2007-11-15 21:58:58 · 3 answers · asked by MUKUL M 1 in Chemistry

2007-11-15 21:56:04 · 8 answers · asked by Anonymous in Weather

The question is: If you find a galaxy that is 20 minutes of arc in diameter and you measure its distance to be 1 Mpc, what is its diameter?

Not sure how to figure this out? Formula?

2007-11-15 21:53:00 · 2 answers · asked by Anonymous in Astronomy & Space

2007-11-15 21:39:45 · 5 answers · asked by David C 1 in Physics

I noticed less activity once I got my dads ashs at one place I lived that had some paranormal activity.

2007-11-15 21:27:53 · 10 answers · asked by Death Girl Am 6 in Paranormal Phenomena

It is a stupid question similar to sci-fci movies, but we cant ignore it... Some scientist have decteted alien base at moon.. and as neil amstrong have said that "we were warned off by aliens when we are no the moon". It means that aliens dont like us.. and they are building their moon base to attacks us, and they have many visits to earth to check our techonoly, i think that thier planet is completely full so they want another planet to increase their population..

What u will going to do if alien attack us.. their techonology is 100 times better then our technology... and if they will attack us they will come with their full force..then w'll have no choice except dieying..

Are you ready to fight against aliens becuase if the war take place .. their would be no sound effect as shown in movies or any special effects.. only death will be waiting in the battle field..

Plz dont reply if you are not aware of alien moon base story...

2007-11-15 21:26:57 · 31 answers · asked by Nikol teddy 1 in Astronomy & Space

I'm talking about where c=n/V. Where c=concentration in moles/L, n=number of moles, V=volume in litres...

2007-11-15 20:57:53 · 6 answers · asked by youspinmerightround 2 in Chemistry

Global Positioning Satellite

2007-11-15 20:56:29 · 4 answers · asked by Iyk 1 in Astronomy & Space

2007-11-15 20:37:16 · 27 answers · asked by Anonymous in Earth Sciences & Geology

And what is a high pressure area. Explain it in the easiest way possible.

2007-11-15 20:16:22 · 5 answers · asked by Anonymous in Weather

It's violet, but I need to know why. Thanks.

2007-11-15 20:14:08 · 1 answers · asked by teknique 6 in Chemistry