Science & Mathematics - 8 July 2007

But, if you look far far away and say you see a star burn out, wouldn't you be looking into the future...because you wouldn't normally know it until later when the last light would naturally reach Earth..like they say..if our sun burned out..we wouldn't know it for 4 minutes..So if we looked far enough to meet the light...it would sort of be the past(the event already happened) and the future because we saw it sooner(with telesopes) than nature would have us see it..........am I crazy

2007-07-08 09:55:20 · 14 answers · asked by dutara 3 in Astronomy & Space

A big car of mass 2m travels at speed v, and a small car of mass m travels with a speed 2v. Both skid to a stop with same coefficient of friction. What is the ratio of the stopping distance of the small car to that of the large car. (Please help, Using Work-Engergy Theorem)

2007-07-08 09:53:06 · 3 answers · asked by Anonymous in Physics

2007-07-08 09:52:11 · 7 answers · asked by jessica 1 in Medicine

A body undergoes forced oscillation,. Which one of the following will not be increased by increasing the amplitude of the oscillatory driving force?

1) The amplitude of the driven oscillation
2) The energy of the driven oscillation
3) The frequency of the driven oscillation
4) The power requred to maintain the driven oscillation.

2007-07-08 09:51:28 · 2 answers · asked by ela kolla 2 in Physics

you drop one penny per hour.The plane is travelling at 720 mph. How long does it take you to drop all 100 pennies. Assume plane refuels at speed in mid-air and you do not pick up the pennies as they drop, and also you you start dropping pennies as soon as the plane reaches speed.

2007-07-08 09:50:13 · 4 answers · asked by Book of Changes 3 in Mathematics

I can't figure how to add the drawing to this so I will just give the dimensions and hope someone can help.
Point A is farthest from the circle. A straight line going to the circle is Point D. From Point A to D is 18. Point C goes diagonally up towards the circle. Point A to C is 24. Inside the circle is Point B with dotted line (r) going to D and a dotted line(r) going to C. Inside the circle by Point C is the square box denoting a right angle. If anyone can understand what I've described I would appreciate your input.

2007-07-08 09:49:20 · 4 answers · asked by Anonymous in Mathematics

Okay..If you take ibuprofen 800 mg or whatever, how many would you have to take to make it screw you up. Like if you just take it for no reason?

2007-07-08 09:47:04 · 4 answers · asked by i_want_black_and_blues 2 in Medicine

2007-07-08 09:46:43 · 10 answers · asked by Anonymous in Medicine

What is the length of the side of a square inscribed in a circle of radius 1?
Also, what is the lenth of the side of a cube inscribed in a sphere of radius 1?

2007-07-08 09:43:40 · 7 answers · asked by Anonymous in Mathematics

doctors?
im on the roll again lol

2007-07-08 09:43:30 · 4 answers · asked by Anonymous in Medicine

would the lava also become artificially radioactive???? would radioactivity be emmited from the lava.

2007-07-08 09:43:16 · 8 answers · asked by ksm 1 in Chemistry

can anyone help me answer these questions?
(answers in seconds if possible)
Time it takes to cross a hydrogen nucleus

Time it takes the light from this page to reach your eye

Time it takes your friend's voice to reach your ear...3 meters away

Age of the USA in seconds

Time since the birth of Jesus in seconds

Time humans have existed on earth in seconds

Time since dinosaurs disappeared in seconds

Age of the Earth in seconds

Age of the Universe in seconds

The useful lifetime of the sun in seconds

All the help is appreciated

2007-07-08 09:34:48 · 5 answers · asked by Anonymous in Physics

16y^2 = 25

2007-07-08 09:31:45 · 5 answers · asked by Anonymous in Mathematics

2007-07-08 09:28:34 · 2 answers · asked by Anonymous in Physics

Select the most appropriate solvent for the following solutes:

solute-benzene
water
Hg
CCl4
gasoline


Solute-Br2
CCl4
gasoline
water
Hg


Solute-glucose
water
Hg
gasoline
CCl4


solute- Sn
gasoline
water
Hg
CCl4

2007-07-08 09:28:23 · 2 answers · asked by Anonymous in Chemistry

2007-07-08 09:27:07 · 5 answers · asked by Anonymous in Botany

I know this question sounds horrible, but I'm writing a murder mystery. If someone put a radio into a swimming pool, would it shock someone in the pool enough to kill her? And would it be possible for the killer to pull the radio out by standing on something rubber? Could it possibly look like the victim was killed by lightning? Thank you.

2007-07-08 09:25:32 · 5 answers · asked by Emily H 3 in Other - Science

Select all the miscible pairs from the following liquids

1. H2O and CCl4

2. CCl4 and C6H12

3. H2O and C6H12

4. H2O and Br2

5. CCl4 and Br2

6. C6H12 and Br2

2007-07-08 09:22:56 · 1 answers · asked by Anonymous in Chemistry

doing framing anddetail about it how to make it

2007-07-08 09:22:47 · 2 answers · asked by HtownC-lo 1 in Engineering

I have to perform a complex problem but first I need to get an estimate of the % of organic molecules in a normal diet. It's not in our text so I've been looking online and so far cannot find.

2007-07-08 09:21:29 · 1 answers · asked by Denise T 2 in Chemistry

The question came across my head one day and I tried to solve it myself but failed. I knew there was some simple proofs when I was in school but forget now. Help me to pick up my mathematics.

2007-07-08 09:20:44 · 4 answers · asked by Anonymous in Mathematics

which job is better a Doctor or a Lawyer

2007-07-08 09:20:07 · 20 answers · asked by walu 1 in Biology

2007-07-08 09:19:24 · 1 answers · asked by g2hn 3 in Physics

solve the equation x^3 + sx^2 + x + 2 = 0, if -2 is a root


No answers like "i dont know" please

2007-07-08 09:17:19 · 5 answers · asked by °†¿ÐámñéÐ?†° 2 in Mathematics

A line of indentation always remains. I should imagine the atomic structure of the paper has been impacted in some way that (practically) can't be reversed.

2007-07-08 09:16:43 · 7 answers · asked by Anonymous in Other - Science

What is the reason behind naming the energy shells(orbits in which electrons revolve) as K,L,M,N.........?????

2007-07-08 09:16:38 · 1 answers · asked by Anonymous in Chemistry

Use synthetic division to find the calue of f(-2) for f(x) = x^3 - 3x^2 - x - 9

2007-07-08 09:16:09 · 1 answers · asked by °†¿ÐámñéÐ?†° 2 in Mathematics

If y varies directly as x and inversely as z^2, and y = 3 when x = 2 and z = 4, what is the calue of x when y = 9 and z = 4?

2007-07-08 09:14:29 · 2 answers · asked by °†¿ÐámñéÐ?†° 2 in Mathematics

Greetings:

I've been wondering if being smart just makes you isolated from people around you? I like philosophy and I like science, but finding other people who like both seems hard. Anyway, is being smart a bad thing? Can digging your books isolate you from the rest of the world?

Need to know...

2007-07-08 09:12:59 · 9 answers · asked by reverendlovejoy75 3 in Physics

2007-07-08 09:12:07 · 9 answers · asked by Anonymous in Zoology