Science & Mathematics - 10 December 2007

i need help with using sine in SOH CAH TOA. the opposite angle is 5 in this case, and i need to find hyp. the angle is 36, so do i do:
Sin 36= 5 / Hyp?
For sine 36 i got 0.5877853, but then what do i need to multiply it with to find the Hyp? do i multiply it by 5? im so confused please help!!

2007-12-10 04:37:35 · 4 answers · asked by asdf 1 in Mathematics

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why do people eat meat?

god has given the same feeling of pain in humanbeings and animals . when we kill the animals for our food . is that not wrong ?how can a humanbeing kill the animals for taste sake ? i dont want to hurt the people who eat meat ? i just want to know that what they think ?even i have started to make it for my family members but i dont want to eat the meat. so people dont mind please give the answer even the non meat eater can share their views

2007-12-10 04:37:20 · 28 answers · asked by queeny 1 in Zoology

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Water treatment, where does the solid waste (poop) go?

So the typical answer is that it separated via a straining process, sanitized and taken to an incinerator or landfill. Since landfills are far more popular in the U.S., focus on that. Is it stored separately from the rest of the trash, that is, how is it processed at the landfill?

2007-12-10 04:37:05 · 3 answers · asked by gnupooh 1 in Engineering

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can you help me with math?

simplify:

a^2b + 2ab^2/ab - 2ab - b^2/b

2007-12-10 04:35:59 · 10 answers · asked by Anonymous in Mathematics

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what is x in 7(2x + 3) = 28?

2007-12-10 04:35:15 · 4 answers · asked by baloo 2 in Mathematics

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Why is the elephant scared of the mouse?

On the show "Mythbusters", they did an experiment that seemed to indicate that elephants have an adverse reaction to mice. They put a live mouse in a hollowed out elephant dropping. When an elephant walked by, they pulled a string and let the mouse out. Two elephants seemed startled on distinct trials, (they only tried it with the mouse twice, so that's 100%). And there was no reaction when they moved the device without a mouse in it. I know its not a truly scientific experiment, not a big enough sample, etc. But why do you think the elephants would react to a mouse like that?

2007-12-10 04:32:43 · 6 answers · asked by juicy_wishun 6 in Zoology

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Why do suns rays appear to radiate instead of appearing parallel when going through clouds?

2007-12-10 04:29:28 · 1 answers · asked by Anonymous in Physics

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Gravitational pull is determined by __________.?

mass

acceleration

volume

the sun

2007-12-10 04:26:56 · 10 answers · asked by XxGeisha_ChikxX 1 in Astronomy & Space

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math homework help..algebra 1?

Transform the equation x^2 + y^2 - 6x + 9y = 1 into standard form by completeing the square.?
also can someone state center radius

2007-12-10 04:23:16 · 1 answers · asked by referencearea 2 in Mathematics

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Reed Switches?

I'm creating an alarm that needs reed switches to run. Should I buy reed switches that are normally closed, or normally open and create a circuit with an inverter. How hard is it to create a circuit with a logic inverter? Does anyone have any circuit diagrams?

2007-12-10 04:20:54 · 4 answers · asked by thebestkiano@btinternet.com 2 in Engineering

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Orange Question?

How many regular sized oranges would fit into the Earth? Imagine all the Oranges!

2007-12-10 04:19:05 · 5 answers · asked by Anonymous in Other - Alternative

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can you help me factor some numbers?

factor completely:
1. 22y^4 - 33y^3 -11y^2

2. 77r^7s^7 -84r^8s^4

2007-12-10 04:17:46 · 5 answers · asked by Anonymous in Mathematics

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2 Calculus question that were on the final?

I think I might have gotten these wrong. It's burning at the back of my mind on what the answers to these questions are. Can you please explain how to arrive at the solution?

1) The base of a triangle is slipping at a rate of 2cm/sec and the top is slipping at a rate of 3cm/sec. What is the rate when the base is 20cm and the height is 50cm? Is the area decreasing or increasing?

2) The volume of a topless can is 27pi. Find the radius and height. How do you know that these are the minimum dimensions?

2007-12-10 04:17:28 · 2 answers · asked by Anonymous in Mathematics

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Are the ETs that orbit Earth in flying discs bioroids (biological androids) or a natural species?

2007-12-10 04:14:49 · 8 answers · asked by Kairos 2 in Astronomy & Space

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Evaluate the series 1 + z + z²/2 + z³/6 + .. + z^n/n! + ... at point z=iπ?

2007-12-10 04:11:13 · 3 answers · asked by Alexander 6 in Mathematics

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can you help me with this math problem?

Provide a counterexample for each statement.
1. (n + 2)^3 = n^3 + 2^3

2. x^2 > x for all values of x

2007-12-10 04:08:59 · 4 answers · asked by Anonymous in Mathematics

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Math bookworm problem?

There are four volumes of Twain's collected works on a shelf. The pgs of each volume are exactly 2 inches thick. The covers are each 1/16 inches thick. The bookworm started eating on pg 1 of volume 1 & ate through to the last pg on volume 4. What is the distance the bookworm covered?

2007-12-10 04:08:09 · 4 answers · asked by NICOLE 2 in Mathematics

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Debunk variable speed transmission invention?

A friend describes his invention for a variable speed tranmission for bicycles, which involves a novel design for a sprocket wheel. This sprocket wheel has a flexible system of spring-like spokes so that it can have an eccentric axle, i.e. the axle is off center with the sprocket wheel. The theory is that the "effective lever arm length" is continuously adjustable. What's the best way to explain why this idea won't work?

2007-12-10 04:07:53 · 7 answers · asked by Scythian1950 7 in Engineering

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