Science & Mathematics - 4 October 2006

I mean literally, in a scientific way.

2006-10-04 15:58:12 · 18 answers · asked by GUESS 1 in Astronomy & Space

2006-10-04 15:57:50 · 4 answers · asked by pk 1 in Other - Science

space station is shaped like a ring and rotates to simulate gravity. If the radius of the space station is 110 m, at what frequency must it rotate so that it simulates Earth's gravity? [Hint: The apparent weight of the astronauts must be the same as their weight on Earth.]

2006-10-04 15:55:33 · 3 answers · asked by Anonymous in Physics

2006-10-04 15:53:13 · 2 answers · asked by Lemonade is Good 5 in Mathematics

I have been trying this problem for a while now and i can't seem to get the right answer. i know that part a is somewhere between 4 s. and 5s. and i got 45.1 for the speed.

A stone is thrown vertically upward with a speed of 13.0 m/s from the edge of a cliff 78.0 m high (Fig. 2-32).



(a) How much later does it reach the bottom of the cliff?
s
(b) What is its speed just before hitting?

2006-10-04 15:52:42 · 3 answers · asked by beast 1 in Physics

2006-10-04 15:52:33 · 5 answers · asked by Amy A 1 in Biology

a score that is 8 points above the mean corresponds to a
z-score = 0.50. What is the population standard deviation?

2006-10-04 15:48:42 · 2 answers · asked by .......... 4 in Mathematics

2006-10-04 15:48:24 · 3 answers · asked by wild_turkey_willie 5 in Mathematics

How fast in RPM must a centrifuge rotate if a particle 9.00 cm from the axis of rotation is to experience an acceleration of 115,000 g's?

Please explain your answer...

2006-10-04 15:46:08 · 6 answers · asked by Anonymous in Physics

2006-10-04 15:41:36 · 0 answers · asked by nhickie b 1 in Biology

do they lose their erection?

2006-10-04 15:40:51 · 9 answers · asked by Anonymous in Biology

If i have a target initial velocity for a pebble i want to slingshot, how do i determine how far back to pull the slingshot? it must depend on the rubber band, right, sort of like the spring constant?

2006-10-04 15:40:26 · 2 answers · asked by need help! 3 in Physics

How is methane a threat or danger to the climate, and earth, involving global warming and the green house effect? is the greenhouse effect and global warming the same thing? Is there anything we can do about these problems and should we or should we not find ways to eliminate methane from the atmosphere, if so, how and why?

2006-10-04 15:36:14 · 2 answers · asked by Ali 2 in Earth Sciences & Geology

A scientist recently discovered a shark that walks on the ocean floor. My question is if whether that shark will decide that oxygen is good and becomes a LANDSHARK...seriously.

2006-10-04 15:35:43 · 8 answers · asked by Aaron 1 in Biology

2006-10-04 15:34:52 · 7 answers · asked by rachidik2 1 in Engineering

sue arranges flowers into vases of mums and roses.there are 212 mums and 68 roses. what is the greatest amount of flowers in each group?

2006-10-04 15:34:44 · 9 answers · asked by Anonymous in Mathematics

I was wondering what the largest numbers a computer can divide with an accuracy of 2 decimal places?

2006-10-04 15:34:22 · 2 answers · asked by Ed S 1 in Mathematics

How many meters above the ground would a person ( 182 lb ) have to climb to gain 3 kilojoules ( 3000 joules ) of potential energy. We usually measure our weight ( W = mg ) in pounds. For conversions, you may need to know that 1 pound is equal to 4.448 Newtons.

2006-10-04 15:33:19 · 3 answers · asked by Anonymous in Physics

that makes a 34 degree angle with the ground. The man pulls with a force of 43.2 N. The sled moves 29.7 m in 4.9 s.

What is the man's power? Answer in W.

2006-10-04 15:31:00 · 1 answers · asked by Dee 4 in Physics

ok, i asked something similar earlier...and people answered that to find your velocity you do d/t which is fine, but in this case i'm not throwins straight and theres a bunch more involved so....

Heres the deal: I have:

Dx= 5.45m
t=1.97s
Vx = 2.76 m/s
Vf= 0 m/s
a=g

Now...how do I find either V or Vy to get the missing side and calculate how fast i throw in mph?

I honestly can't figure this out...please help

2006-10-04 15:30:39 · 3 answers · asked by tripp 1 in Physics

If you've been doing Algebra since 8th grade and then in 11th you chose your math, do you think Pre-Calc-where your using what you've learned throughout the years- or Accounting would be easier? Just curious.

2006-10-04 15:26:59 · 5 answers · asked by Loved By Someone Above 4 in Mathematics

Prokaryotes are found throughout the biosphere. Answer two of the follwoing

1) Provide three examples of adaptations found in various prokaryotes. Explain how these adaptations ensured the success of prokaryotes

2) Discuss how prokaryotes early in Earth's history altered environments on Earth

3) Discuss three ways in which prokaryotes continue to have ecological impact today

2006-10-04 15:26:40 · 3 answers · asked by ibid 3 in Biology

2006-10-04 15:26:27 · 6 answers · asked by gbemi 1 in Medicine

fields of science

2006-10-04 15:25:32 · 9 answers · asked by david d 1 in Biology

I'm looking into engineering while in the Air Force, and I wanted to get an idea of which one I want to do. So either any ideas of which ones you like, or where I could look would be very helpful.

2006-10-04 15:23:18 · 3 answers · asked by Loved By Someone Above 4 in Engineering

Honestly I think the developtment of virtual reality will be improve in the next years and holograms will be the next big thing, besides, of course the robots that are gonna do all the physical jobs in the future, but I dont know how many years till everybody could have one, cause at first as always just rich people will be able to have them.

2006-10-04 15:22:01 · 7 answers · asked by Jordan 3 in Engineering

what does larger wheels in diameter do to a car, and what about cars with wider tyres?

2006-10-04 15:21:17 · 8 answers · asked by dennis s 3 in Physics

2006-10-04 15:18:47 · 6 answers · asked by rabiamoghul 1 in Chemistry

I have a bonus problem for calc2:

"Show that the medians (ie side bisectors) of a triangle intersect at the centroid of the triangle (geometric center)"

Im kinda confused about the question. You can find the medians easily...But in what direction do you extend them so they all interesect? You can make any 3 points anywhere interesect at the centroid if it is coming from a side. Im really confused.

Anyway, if someone could explain the problem a little better and then offer some TIPS that would be great.

2006-10-04 15:17:52 · 5 answers · asked by James 1 in Mathematics

2006-10-04 15:12:53 · 7 answers · asked by rabiamoghul 1 in Chemistry