Science & Mathematics - 9 September 2007

tanα=6/7
what is α?
please show me the way

2007-09-09 02:21:56 · 5 answers · asked by Amir B 1 in Mathematics

According to HUbbels law, red objects are the farthest in astomomy although this does not hold true in our own galaxy with stars, some being intrinsically one color or another.

Are Quasars objected thrown out of embryonic galaxies as suggested by some x ray images and even visible light images which suggest a connection between galaxies and quasars as opposed to quasars being on distant edges of the universe

If so would the universe scale be much smaller than thought, quasars being in our local clusters

see: the DVD - Hubble Bubble Your're in Trouble
and the DVD Starlight and Time

2007-09-09 02:21:41 · 2 answers · asked by Anonymous in Physics

2007-09-09 02:17:11 · 5 answers · asked by Anonymous in Mathematics

ocean waves, which travel in the open sea at 5m/s, arrive at the beach once every 4s.
1) calculate the distance between the wave crests in the open sea
2)calculate how long these waves would take to reach the beach if they were formed in a storm 1200km away. (answer in hours)

2007-09-09 02:16:45 · 2 answers · asked by Anonymous in Physics

2007-09-09 02:09:41 · 3 answers · asked by daniel c 1 in Mathematics

ABC-is a triangle(angle c=90 degrees)
BC=6
AC=7
calculate the angles of the triangle.
I just started learning trigonometry so please give detailed way

2007-09-09 02:07:07 · 5 answers · asked by Anonymous in Mathematics

2007-09-09 02:01:03 · 4 answers · asked by daniel c 1 in Mathematics

2007-09-09 01:49:24 · 7 answers · asked by daniel c 1 in Mathematics

I am doing my geography homework and it says 98% is caused by running water, I have thought of tectonic activity, meteors and slopes created by humans, can any geographers think of any more? Thanks a lot in advance

2007-09-09 01:44:29 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I was bought 2 acres as a gift in 2005, with deeds & certifcates.

2007-09-09 01:44:27 · 12 answers · asked by Anonymous in Astronomy & Space

2007-09-09 01:43:12 · 2 answers · asked by Anonymous in Astronomy & Space

Hello mates, my question is that where can I find neodymium magnets that is already in my home, office or school? Can it be in a hard disk? Can it be in a Computer Monitor, TV? Please help, I need it for our science exhibit to show a homopolar motor, I don't like buying through the internet....

2007-09-09 01:42:37 · 3 answers · asked by Anonymous in Engineering

a train usually goes 800 km in speed v.
one day,the train past 400km in 0.8v and another 400km in 1.2v
as a result of this it tooked the train 20 more minutes to do this.
what is the usual speed of the train?

2007-09-09 01:42:32 · 2 answers · asked by Anonymous in Mathematics

2007-09-09 01:41:44 · 3 answers · asked by Michael Ray G 1 in Mathematics

the curvature of space?

2007-09-09 01:41:04 · 4 answers · asked by Anonymous in Physics

2007-09-09 01:36:44 · 4 answers · asked by Anonymous in Physics

Please answer this question!!!I want to know how to make putty!!!

2007-09-09 01:32:19 · 2 answers · asked by lucario50 2 in Chemistry

f(x) = x^2 (0 smaller or equal to x smaller than positive infinity)

2007-09-09 01:27:06 · 2 answers · asked by christina 1 in Mathematics

2007-09-09 01:24:56 · 5 answers · asked by Tr4ck4Inc@ 2 in Earth Sciences & Geology

x^2+2x+3x+6

2007-09-09 01:22:36 · 4 answers · asked by BoboboboboO! 1 in Mathematics

2007-09-09 01:18:03 · 4 answers · asked by Anonymous in Physics

(5c - 8)^2 - (2c - 5)^2

thanks for the help

2007-09-09 01:06:01 · 8 answers · asked by K Rose 3 in Mathematics

how can i get the vth of a circuit if the element to be removed is a source

2007-09-09 01:05:46 · 4 answers · asked by silence 1 in Engineering

Two rooms are connected by a hallway that has a bend in it so that it is impossible to see one room while standing in the other. One of the rooms has three lights switches. You are told that exactly one of the switches turns on a light in the other room, and the other two are not connected to any lights. What is the fewest numbers of times you would have to walk to the other room to figure out which switch turns on the light? And the follow up question is: Why is the answer to the preceding question “one”? (Look out, this question uses properties of real lights as well as logic.)

2007-09-09 01:04:32 · 2 answers · asked by Livelife 1 in Physics

At the same time a block of iron and an equally heavy iron sphere are released from the top of a slope. Assume that the friction between the slope has a negligible effect on the velocity of the block and the sphere. Which of the two will be down first?

There is this slope prepared for this experiment. Then a block of iron and equally heavy iron sphere is brought to the top of the slope and release from the top of the slope at the same time. OK – assuming that the friction between the slope has a negligible effect on the velocity of the block and the sphere – [who in yahoo answer has the intelligence to tell which of the two will be down first?]

** - very important show your working with answer

2007-09-09 01:04:31 · 5 answers · asked by Anonymous in Physics

i need to know for my homework... and i can't find any thing, can someone help me

2007-09-09 00:58:40 · 7 answers · asked by Anonymous in Biology

2007-09-09 00:55:22 · 1 answers · asked by Anonymous in Biology

The product of their ages is 72 and the sum of their ages is the witches he said he had seen on the way to work that morning.
The warlock needed more information.
The wizard tells him his youngest child is named Harry.
The warlock knows the ages now.

The ages are 6,6 and 2. But why?
This involves logic, such as when he talks about Harry, it means he has a youngest child ie he does not have 2 children with the same age being youngest

2007-09-09 00:49:23 · 3 answers · asked by Benan L 1 in Mathematics

Already asked this question...but let me give another situation.

People said that it's all in the nature of the surface. but how come any surface i paint with red paint turns red?

what if i make a dent in the surface? will it chance color? the angle light comes in changes do does the surface. Enlighten me.

2007-09-09 00:28:10 · 1 answers · asked by Wolfie 2 in Physics

please helppppp!!!

2007-09-09 00:27:30 · 4 answers · asked by Anonymous in Other - Science