Physics - October 2006

2006-10-08 18:20:41 · 15 answers · asked by suddu5977 1

poles?

2006-10-08 18:18:11 · 4 answers · asked by wildbutterflychick 2

Physics Question?

You were so impressed with the problem about Super Dave that you decide that this would make a good stunt for the Institute of Technology (IT) day. To raise money for a University scholarship fund, you want to have the new IT dean bungee jump from a crane if contributions can be found for 10 scholarships. To add some interest, the jump will be made from 44 m above a 2.5 m deep pool of Jello. A 30-m long bungee cord would be attached to the dean's ankle. First you must convince the dean that your plan is safe for a person of his mass, 70 kg. The dean knows that as the bungee cord begins to stretch, it will exert a force which has the same properties as the force exerted by a spring. Your plan has the dean stepping off a platform and being in free fall for the 30 m before the cord begins to stretch. You must determine the elastic constant of the bungee cord so that it stretches only 12 m, which will just keep the dean's head out of the Jello.

2006-10-08 18:16:31 · 4 answers · asked by Anonymous

I've been looking for an answer all over the internet but i can't seem to find an answer. Please help!

2006-10-08 18:05:59 · 3 answers · asked by Anonymous

A ball is swung from a 5 meter rope that is attached at a central point.

The ball's velocity is 10m/s. What is the centripetal acceleration of the

ball?

2006-10-08 18:02:44 · 4 answers · asked by .......... 4

2006-10-08 18:02:42 · 4 answers · asked by Greg P 1

in a beams ultracentrifuge, the rotor is suspended magnetically in a vacuum. Since there is no mechanical connection to the rotor, the only friction is the air resistance due to the few air molecules in the vacuum. if the rotor is spining with an angular speed of 5.0^105 rad/s and the driving force is turned off, its spinning slows down at an angular rate of 0.40 rad/s2.

How long does the rotor spin before coming to rest?
During this time, through how many revolutions does the rotor spin?

Okay, I need some help with this problem, what are the formulas i would use to solve this?

2006-10-08 17:36:14 · 1 answers · asked by Trevor M 1

If some days we have clones of ourselves, and they are exactly like us, with emotions, passion, feeling, senses and all that stuff... should they be allowed to be used as lab rats and do you think they would have souls? Think of it this way... what if you were created to be a clone... how would you feel to be a lab rat? Since you have the mind to think that and feel what they do to you...

2006-10-08 17:32:29 · 10 answers · asked by Anonymous

2006-10-08 17:24:32 · 6 answers · asked by joseintpa 1

COULD YOU MAKE A HOLE IN SPACE???

THINK ABOUT IT!!!

SAY I BUILT A 20,000V ELECTRO MAGNET IN MY HOUSE!!!!

CAN'T I MANIPLATE THE SPACE TIME CONTINIUM???

PLEASE SERIOUS ANSWERS ONLY!!!

NO COPY AND PASTE!!!

I DEMAND YOU GIVE ME YOUR BEST THINKING!!!

2006-10-08 17:23:51 · 3 answers · asked by MICROSOFT VISTA IS THE BEST O/S! 1

In the below figure block B weighs 711 N and the coefficient of static friction between it and the table is 0.25. Find the maximum weight of block A for a completely stationary system.

2006-10-08 17:16:17 · 2 answers · asked by James B 1

2. In a women’s volleyball court the court measures 9.0 m by 9.0 m on each side and the top of the net is 2.24 m off the ground. A tall athlete serves the ball at 3.0 m above the ground and 8.0 m from the net. If the initial velocity of the ball is horizontal,
(a) What is the minimum speed the ball must have to clear the net?
(b) What is the maximum speed the ball can have to ensure it is not out when it hits the ground beyond the net?

2006-10-08 17:15:41 · 2 answers · asked by James B 1

1. Carlos is sitting in his car at a red stoplight. As soon as the light turns green Carlos begins to accelerate at 2.2 m/s2. At the same time Miko drives past Carlos traveling at a constant 9.5 m/s. (a) How far will Carlos travel before he catches up to Miko? (b) What is Carlos’ speed at this point?

2006-10-08 17:14:41 · 2 answers · asked by James B 1

AND CONNECT THE OTHER END TO MY COMPUTER.
CAN I INTERACT WITH MY COMPUTER???

ONE END CONNECTED TO MY HEAD AND THE OTHER END CONNECTED TO MY COMPUTER!!!

I LOVE MY COMPUTER AND WOULD LOVE TO INTERACT WITH IT!!!

I DEMAND SERIOUS ANSWERS!!!

PLEASE NO COPY AND PASTE ANSWERS!!!

NO DUMB ANSWERS ETHIER!!!

2006-10-08 17:00:28 · 6 answers · asked by MICROSOFT VISTA IS THE BEST O/S! 1

A physicist measures the instantaneous velocity of an object in three different places along its journey. The velocities were 2 m/sec, 4 m/sec, and 8 m/sec. She then measures the object's average velocity throughout the journey. Which of the following values is most likely to be that average velocity: 1m/sec, 3 m/sec, or 16m/sec?

2006-10-08 16:54:13 · 7 answers · asked by iluvhipos 3

this is for molecular conversions try it, see what you get cause i don't think i got the right answer.

2006-10-08 16:44:54 · 5 answers · asked by 10knicb 1

does velocity effect what angle one should use? Is a javelin a different angle than a shot put or a rifle or a bow and arrow?

2006-10-08 16:36:01 · 6 answers · asked by Dan V 2

I went to a lecture on Saturday on Time Travel with the speaker as Nobel Laureate Anthony J. Leggett. I didn't quite understand his British accent. But can time travel backwards? I wonder if it's possible...

2006-10-08 16:28:06 · 9 answers · asked by iceui2 2

I work on ultraound processes, Can someone suggest some materials which i can build the reactor so that the sound waves are reflected inside th vessel instead of passing away from the reactor?

2006-10-08 16:14:46 · 1 answers · asked by Gangadhar A 1

I want to learn how to make my own simplistic particle accelerator, for *ehm* a bit of a project of mine. However, I would like to be able to create one, that would give me quantative, or at least qualatative results. Anyone have any ideas, or ways to help me do this?

2006-10-08 15:39:13 · 9 answers · asked by k soni 2

at an average rate of 1.69 x 10^6 kg/s, & half the potential energy of the water was converted into electric energy, how much power would be produced by the falls (in units of MW)? Acceleration of gravity is 9.81 m/s^2

2006-10-08 15:25:18 · 5 answers · asked by Mariska 2

2006-10-08 15:13:11 · 7 answers · asked by hotpockets122000 3

with a parachute, of course

2006-10-08 14:53:35 · 7 answers · asked by Anonymous

I've heard of these, and I was wondering if normal people could actually buy them. If so, how much would they cost? If they are not available for the public, are people saying when they will be? I'm wondering because it'd be totally cool walking down the street with one before the are on the sale rack at Target, am I right? ;)

By "invisibility cloaks", I mean the technology that appears in these links:

http://news.bbc.co.uk/cbbcnews/hi/sci_tech/newsid_2730000/2730639.stm
http://science.howstuffworks.com/invisibility-cloak.htm
http://science.howstuffworks.com/invisibility-cloak1.htm
http://news.bbc.co.uk/2/hi/technology/3791795.stm

Thanks for your answers!

2006-10-08 14:33:39 · 10 answers · asked by Anonymous

its from about 1945 and is in a solid block

2006-10-08 13:57:43 · 7 answers · asked by skede15 1

Forgive any spelling mistakes, Im only in 6th Grade.

2006-10-08 13:56:43 · 4 answers · asked by Anonymous

for physics class

2006-10-08 13:40:07 · 10 answers · asked by djbubbabryan 2

The person in Figure P4.51 weighs 190 lb. Each crutch makes an angle of = 22.0° with the vertical.
Half of the person's weight is supported by the crutches, the other half by the vertical forces exerted by the ground on his feet.
Assuming the person is at rest and the force exerted by the ground on the crutches acts along the crutches, determine each of the following.

1.) the smallest possible coefficient of friction between crutches and ground

2.) the magnitude of the compression force supported by each crutch

2006-10-08 13:31:53 · 1 answers · asked by activegirl 1

Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.48. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of = 40.0°. The objects are released from rest, and m2 slides 1.50 m down the incline in 4.30 s.

a.)Determine the acceleration of each object

m1 upward and m2 down the incline

b.) Determine the tension in the string.

c.) Determine the coefficient of kinetic friction between m2 and the incline

2006-10-08 13:26:29 · 2 answers · asked by activegirl 1

A. What force does this book apply to the table?

B. What pressure does the book apply?

10 pts to whoever can explain this best using correct mathematical reasoning

2006-10-08 13:24:58 · 2 answers · asked by kayy_bee123 1