Science & Mathematics - 24 August 2006

2006-08-24 13:44:39 · 10 answers · asked by bootstrap 1 in Other - Science

2006-08-24 13:44:36 · 6 answers · asked by lilian o 1 in Physics

On the ride "Spindletop" at the amusement park Six Flags Over Texas, people stood against the inner wall of a yellow vertical cylinder with radius 2.5 m. The cylinder started to rotate and when it reached a constant rotation rate of 0.60 rev/s, the floor on which people were standing dropped about 0.5 m. The people remained pinned against the wall.

a.) Draw a force diagram for a person on this ride, after the floor has dropped.

b.) What minimum coefficient of static friction is required if the person on the ride is not to slide downward to the new position of the floor?

c.) Does your answer in part (b) depend on the mass of the passenger? (Note: When the ride is over, the cylinder is slowly brought to rest. As it slows down, people slide down the walls to the floor.)

2006-08-24 13:42:54 · 7 answers · asked by just_askin' 1 in Physics

I would like to know the methodology applied to solve this kind of problems

2006-08-24 13:42:27 · 9 answers · asked by lbitran 1 in Mathematics

I was thinking about that lately, why is it that we, and all the creatures around us, on the outside have this nice appearance, but internaly there is nothing appealing to the eye..??

2006-08-24 13:36:41 · 13 answers · asked by vkuzy 1 in Biology

this morning when i was on my way to school, my dad was listening to the am radio and they said that pluto wasn't a planet anymore... like... WHAT???..... i was a little surprised!...

2006-08-24 13:36:06 · 23 answers · asked by Lei 2 in Astronomy & Space

When I type rt(i) in the calculator, it gives me a weird answer that is not related to i or -1 (it gives me the answer ".7071067812+.707...."). How is this so? How can you take the sqrt of the sqrt of -1 (i) and get this sort of answer?

2006-08-24 13:34:21 · 11 answers · asked by Anonymous in Mathematics

An experimenter plots his collected data on a graph and sees that all of the data points fit perfectly onto a horizontal line. What relationship does this represent between the variables?
A Strong, direct
B Strong, inverse
C Weak, direct
D No relationship

2006-08-24 13:32:49 · 6 answers · asked by cammiechameleon1 1 in Physics

2006-08-24 13:32:26 · 23 answers · asked by Matt 3 in Astronomy & Space

2006-08-24 13:30:09 · 17 answers · asked by Hayden 1 in Mathematics

and football occupies 30 percent of the students involved in sports...whats the overall (100%) amount of students involved in sports...

i just want to see if I was the only one who couldn't get this at first..i felt so stupid.....do you know the answer...first one to get it right gets ten points...

2006-08-24 13:26:05 · 4 answers · asked by mixed 1 in Mathematics

pluto isn't a planet anymore!! they said it was too small. isn't that wrong!?

why did they decide this?? i ♥ pluto. well, not really but still. i think it should've stayed a planet. what's your opinion?

2006-08-24 13:25:14 · 12 answers · asked by Anonymous in Astronomy & Space

Looking for a link giving the new parameters that exclude poor Pluto.

2006-08-24 13:24:19 · 7 answers · asked by absynthian 6 in Astronomy & Space

2006-08-24 13:23:47 · 15 answers · asked by istand1000 1 in Astronomy & Space

2006-08-24 13:23:25 · 16 answers · asked by Thinker 4 in Engineering

2006-08-24 13:21:48 · 11 answers · asked by billyjoeh24 1 in Earth Sciences & Geology

A laser range finder is able to compute a distance up to 3 km with an accuracy of 99.5%. What possible error is there in a reported measurement of 2500 meters?
A less than 5 meters
B between 5 an 10 meters
C between 10 and 15 meters
D over 20 meters

2006-08-24 13:21:15 · 6 answers · asked by cammiechameleon1 1 in Mathematics

2006-08-24 13:20:01 · 13 answers · asked by Derrick 3 in Astronomy & Space

A model rocket is launched straight upward with an initial speed of 46 m/s. It accelerates with an constant upward acceleration of 2.21 m/s^2 until its engines stop at an altitude of 160.7 m.

What is the maximun height reached by the rocket?

How long after lift-off does it maximum height?

How long is the rocket in the air?

2006-08-24 13:19:20 · 15 answers · asked by Said 4 in Mathematics

Our megnetic north changes every million years or so and I am curious as to why and how this occurrs. Would it have anything to do with our molten metallic core moving or just due to the fact that our constant spin on our axis causes it.

2006-08-24 13:13:12 · 9 answers · asked by scottwatras 2 in Physics

2006-08-24 13:13:08 · 19 answers · asked by Anonymous in Astronomy & Space

2006-08-24 13:11:57 · 17 answers · asked by Anonymous in Other - Science

2006-08-24 13:11:02 · 7 answers · asked by dam 5 in Astronomy & Space

At time t = 5 seconds, the position of a model car is 6 meters. At time t = 10 seconds, the position is 14 meters. Determine the average speed of the car for this time interval by calculating the slope between these two points. The time is plotted on the x-axis.t

2006-08-24 13:08:39 · 13 answers · asked by cammiechameleon1 1 in Physics

I heard on the news that Pluto is smaller than originally thought and smaller than our moon so scientists now don't want it to be known as a planet, but after all this time should we change it? What is a definition of a planet

2006-08-24 13:03:15 · 22 answers · asked by bertleeboy 2 in Astronomy & Space

this vote by the IAU is totally bogus!!!!!Pluto is a panet and they know it!We should start the Save Pluto Foundation shouldn't we?

2006-08-24 13:02:21 · 13 answers · asked by That one guy 6 in Astronomy & Space

2006-08-24 13:02:17 · 9 answers · asked by Anonymous in Mathematics

2006-08-24 13:00:13 · 17 answers · asked by Anonymous in Chemistry

Ideally, I would like a filter that passes exactly three distinct wavelength ranges. I could get an arbitrary two-pass via an appropriate choice of notch, but not clear how to get an arbitrary three-pass? (I have found some specific three-pass filters, but they only come in certain varieties.)

2006-08-24 12:58:21 · 2 answers · asked by A professor (thus usually wrong) 3 in Engineering

2006-08-24 12:56:53 · 11 answers · asked by Chris P 3 in Geography