Physics - December 2006

I was never good at math because I wasn't really interested in it but physics I like and I was good at it so any advice...sure there are some things with physics I find utterly boring but still generally speaking it fascinates me; mother nature gave me talent for languages and incredible body movement but I don't know about physics...

2006-12-19 21:17:14 · 12 answers · asked by Tina M 2

There are even smaller things called Super Strings and the whole atoms concept is wrong? Or incomplete...?

2006-12-19 21:08:59 · 4 answers · asked by Tina M 2

but not into the past! why not?

2006-12-19 20:50:42 · 9 answers · asked by Tina M 2

This riddle popped in my head one night and cant figure it out. Lets say you have a secure standing stick that is one light year tall and you cut the very bottom of it. Obviously the bottom will fall to the ground imediatley, but will it take one year for the top to start falling since information travels at the speed of light. If that indeed happens, then is the stick actually getting tallerer when the bottom drops to the ground. Where is this extra mass coming from. If this is so, then any standing and secure object that is cut at the bottom acually increases in height (though immersurable) while following. If u have objects that are millions of light years tall than the object will increase in height dramatically? Please help me with this

2006-12-19 20:33:14 · 11 answers · asked by Anonymous

2006-12-19 20:19:29 · 1 answers · asked by wadgare2 1

2006-12-19 19:46:48 · 12 answers · asked by Anonymous

what ever we eat is composed of electrons protons and neutrons(fundamental particles) it mean we eat these fundamental particles.
they actually are tasteless then how how after combining into a substance they give it a taste.
and still further how these fundamental particles combining in different ways impart different tastes to different substances

2006-12-19 19:39:05 · 6 answers · asked by hash 1

2006-12-19 19:05:56 · 4 answers · asked by krunal 1

By the motion of the body we consider its direction.
A body moving towards north with increasing velocity has both directions of velocity and acceleration towards north.
But when a body moves in circle ,acceleration becomes perpendicular to velocity and right hand rule becomes affective.
But why right hand rule is affective when there is no movement in perpendicular direction.

2006-12-19 18:00:13 · 7 answers · asked by hash 1

2006-12-19 17:58:34 · 11 answers · asked by ctmme 1

The volume 4\3(pi(10^-15)^3 and it's density is 2x10^14 kg/m^3. The desired volume is 4\3(pi(5x10^-19)^3. Could a black hole exert this much force.

2006-12-19 17:34:05 · 3 answers · asked by matthias c 2

once i saw someone with a gyro thing i dunno

2006-12-19 17:01:54 · 5 answers · asked by Anonymous

A 500-kilogram sports car accelerates uni-
formly from rest, reaching a speed of 30 me-
ters per second in 6 seconds.
During the 6 seconds, the car has traveled
a distance of

(a) 30 m
(b) 15 m
(c) 90 m
(d) 180 m
(e) 60 m

2006-12-19 16:13:35 · 8 answers · asked by Anonymous

- on the surface of the earth
- at the bottom of a mine
- out in space
- on the moon
- on top of a mountain

2006-12-19 15:23:01 · 17 answers · asked by Anonymous

In my previous question http://answers.yahoo.com/question/index;_ylt=AsHKwJRcx.7FuFV._U.6FlAjzKIX?qid=20061006180743AAME80I
I asked for feedback about the 1st version of the design.

Criticism was raised that the burden of the proof rests on me, yet I remain unconvinced that there is not significant conceptual proof.

If it is true as before that a weight applied to the uppermost end of a see-saw has the force to move another weight horizontally, especially on a track when each weight has wheels, it seems that the primary remaining difficulty is geometry, for as I have found before, when the see-saw tilts at 45 degrees, a weight applied at the uppermost end is sufficient to move another weight more than half of the distance, but not all the way.

Now consider that I have found a certain configuration using a triangular track and a less than 45 degree tilt that seems to solve this problem, especially when the cord is pulled horizontally by contrast to the tilted track.

2006-12-19 15:11:47 · 4 answers · asked by NathanCoppedge 6

An automobile traveling along a straight road
increases its speed from 45 ft/s to 59 ft/s in
180 ft.
If the acceleration is constant, how much
time elapses while the auto moves the 180 ft?
Answer in units of s.

2006-12-19 14:51:53 · 6 answers · asked by Anonymous

(Part 1)
A stone falls from rest from the top of a cliff.
A second stone is thrown downward from the
same height 2.4 s later with an initial speed of
47.04 m/s. They hit the ground at the same
time.
The acceleration of gravity is 9.8 m/s^2.
How long does it take the first stone to hit
the ground? Answer in units of s.

(Part 2)
How high is the cliff? Answer in units of m.

2006-12-19 14:23:05 · 4 answers · asked by Anonymous

How are the dissolved particles of a molecular solid, such as sugar, different from the dissolved particles of an ionic solid, such as table salt?

2006-12-19 14:20:27 · 1 answers · asked by darkevil_child 1

The water in some lakes is basic because the rock underneath the lake is limestone rock made up of calcium carbonate. What chemical reaction happens when acid rain falls on a lake such as this? What happens to the lake's pH?

2006-12-19 14:17:45 · 1 answers · asked by darkevil_child 1

2006-12-19 14:10:49 · 11 answers · asked by darkevil_child 1

2006-12-19 14:02:31 · 3 answers · asked by darkevil_child 1

The other day I put my hand over a flashlight and it turned red, just like it's done since I was a little girl. I've always wanted to know why this happens so any info would be really appreciated...thanks!

2006-12-19 13:56:17 · 5 answers · asked by Manda Lynn 1

You may say an Atom but an atom consists of(i think) protons, neutrons and electrons. I think that electrons are the smallest. But there is a volume of an electron. Like say(just pretend) that a electron is one inch/2.54 centimeters long. Couldn't you cut it in half and then in half again and then again. So is there really a "smallest thing in the world". Thanks!

2006-12-19 13:56:07 · 25 answers · asked by Anonymous

A four-engine jet accelerates down the runway
at 5 m/s2.
If one of the jet engines fails, how much ac-
celeration will the other three produce? An-
swer in units of m/s2.

2006-12-19 13:46:08 · 3 answers · asked by Anonymous

A golf ball is hit at ground level. The ball is
observed to reach its maximum height above
ground level 4.3 s after being hit. 0.61 s after
reaching this maximum height, the ball is
observed to barely clear a fence that is 186 ft
from where it was hit.
The acceleration of gravity is 32 ft/s^2.
How high is the fence? Answer in units of
ft.

2006-12-19 13:16:08 · 4 answers · asked by Anonymous

a pendulum is drawn back so that its bob is now .18 m higher than when it is at its normal equilibrium position. How fast will it go when it passes its normal equilibrium postiion once it is let go? (assume 100% energy is transferred)

I don't know how to approach this without a mass of anything

The answer is v=1.9 m/s (according to the bottom of the sheet)...how did he do this? HOW!?

2006-12-19 12:44:53 · 7 answers · asked by Anonymous

I know that some animals can but how come people can't? Is it our bone structure or something? Please take your time to answer, my royal nobleman.

2006-12-19 12:44:49 · 7 answers · asked by Anonymous

A toy car runs off the edge of table thats 1.225m high. If the car lands 0.400m from the base of the table.........

2006-12-19 10:47:22 · 2 answers · asked by Anonymous

If light travels in straight lines, then there would be gaps left as the source of light emits light beams at an angle and therefore the space in between the angle would be left empty yet we do not see this empty space why is this.

2006-12-19 10:36:55 · 13 answers · asked by saeedsafasaeed 1

Light from the sun reaches Earth in 8.3 min. The velocity of light is 3.00x10 to the eighth power meters per second squared. How far is Earth from the sun?"

2006-12-19 10:19:33 · 14 answers · asked by Anonymous