Physics - September 2007

And How would you estimate the max speed you could give it?

i'm learning about velocity and acceleration

thanks for answering

2007-09-04 13:43:57 · 4 answers · asked by Anonymous

on a balance and a person lifting a heavy stone with a lever.

B. What is point of lever answer in terms of turning affect

2007-09-04 12:57:13 · 1 answers · asked by ????? ? 1

A. Where must an object with a mass of 75 square nuts be placed to balance the stick?

B. If an object of mass m is added to the 200 square nuts at 9cm, the object with a mass of 75square nuts must be moved away from the fulcrum to maintain the balance, call the distance the object must be moved D. solve for D in terms of M.

2007-09-04 12:55:29 · 2 answers · asked by ????? ? 1

2007-09-04 11:19:56 · 2 answers · asked by erikck 2

Be it mobile phones,sat nav, without wires ect all requires some form of energy,

2007-09-04 10:39:30 · 9 answers · asked by Anonymous

to dominate over antimatter...Bringing about asymetry and life?

2007-09-04 10:25:17 · 3 answers · asked by Face 1

2007-09-04 09:36:26 · 11 answers · asked by wess k 1

2007-09-04 09:29:05 · 9 answers · asked by Anonymous

Body A of mass 3kg has a velocity of +4ms^-1 and collides head on with body B, which has a mass of 2kg and a velocity of -2ms^-1. After the collision the velocity of B is found to be +3ms^-1.

What is the velocity of A after the collision?
What is the loss in kinetic energy of the bodies as a result of the collision?

2007-09-04 09:13:57 · 2 answers · asked by Alexander M 1

2007-09-04 08:54:30 · 4 answers · asked by apples and pears 4

How do I change 7.41m/s^2 to km/h^2?

2007-09-04 08:54:23 · 4 answers · asked by Josh2683 1

An electron has a constant acceleration of +2.2 m/s2. At a certain instant its velocity is +8.8 m/s. What is its velocity (a) 2.4 s earlier and (b) 2.4 s later?

I have no clue what's the difference between 2.4s earlier and 2.4s later

2007-09-04 08:40:26 · 1 answers · asked by Jason N 2

A- A new and different set of properties
B- A decrease in the size of the systems
C- A decrease in the number of parts within the system
D- A decrease in the number of energy needed to maintain the system.

2007-09-04 07:47:46 · 3 answers · asked by Anonymous

On Sept. 8, 2004, the returning capsule of the Genesis Mission (which collected particles of the solar wind) crashed to earth in the Utah desert when its parachute failed to open. The capsule, which was 162 in diameter, hit the ground at 311 and penetrated the soil to 50% of its diameter.

Part A
What was the component of its constant acceleration in , as the capsule penetrated the earth?
Take the + direction to be downward, in the direction of the motion of the capsule.

Part B
What was the component of its constant acceleration in ’s, as the capsule penetrated the earth?
Take the + direction to be downward, in the direction of the motion of the capsule.

Part C
How long did it take the capsule to stop once it hit the ground?


If you could help, I would appreciate it. This is the only one I have left and it is driving me nuts. I can't figure it out. I am not sure if I am really getting what the question is asking. Any help would be greatly appreciated.

2007-09-04 07:38:51 · 4 answers · asked by Anonymous

curious.....

2007-09-04 07:23:40 · 9 answers · asked by apples and pears 4

I'm always being asked aren't I 'burning up' because I'm wearing jeans and/or long sleeves. I wonder, at what temperature do people literally 'burn up'? (So I can say, 'Nope, it isn't QUITE xx degrees out.....')

2007-09-04 07:05:33 · 7 answers · asked by imjustasteph 4

Member since: June 13, 2006
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Miechalle
S Physics free fall question help? Thanks :)?
A rock is dropped from a sea cliff and the sound of it striking the ocean is heard 6.1 s later. If the speed of sound is 340 m/s, how high is the cliff? in meters

2007-09-04 07:03:21 · 7 answers · asked by Nikita 1

An object of mass 0.8kg moves due south on a horizontal frictionless plate plane with a speed of 0.5ms^-1. A horizontal force of magnitude 0.0060N directed due east acts on the object for 10s and is then removed. At the instant the force is removed what are the following?

The Velocity of the object?
The Displacement of the object relative to its position at the instant the force was applied (i.e. a distance and direction relative to where the object was at t = 0s)?
The work done on the object by the force?

2007-09-04 06:49:49 · 5 answers · asked by Alexander M 1

I already got the first 2 questions:
(a) How much later does it reach the bottom of the cliff?
i got 5.053 s
(b) What is its speed just before hitting?
38.1094

I just don't know how ro find the tital distance. Is it find the dinstance and then add 67.0 m ? I don't understand so plaese help me out i would really appreciate it Thanks :) xoxo

2007-09-04 06:36:00 · 6 answers · asked by Nikita 1

The city B is 120 miles down the river from city A.
The speed of water flow in the river is 6mph.

How long does it take to sail from A to B in absence of wind?

2007-09-04 05:45:45 · 4 answers · asked by Alexander 6

* gravity
* acceleration
* inertia
* action/reaction

2007-09-04 05:37:46 · 5 answers · asked by Amanda 1

If Universe is created by some million year old technical civilization or whether it got created by itself , i think everything got created from EMPTINESS , emptiness became so dense that it actually caused material elementary particles to be created which evolved with time . What do you think ? Then question can be asked that what caused the emptiness to become dense , so many questions ...

2007-09-04 05:16:00 · 7 answers · asked by Devil 4

2007-09-04 04:37:20 · 4 answers · asked by gundi007 1

In rainy season the speed of the stream increases to 10m/s.
What is the mass M of the biggest rock, which the river can drag and roll in rainy season?

2007-09-04 04:13:33 · 2 answers · asked by Alexander 6

2007-09-04 04:09:33 · 10 answers · asked by Dan 2

Please explain to me what the crests of a De Broglie electron wave represent.

I keep hearing that electrons have wave like properties, but I don't understand what kind of wave properties. Are they mechanical displacement waves, as would represent the plot of a moving pendulum vs. time? Do the electrons behave as lights does, that is as EMR waves and the De broglie wave functions represent various fields?

Or are these "probability of location" waves?

Please help me understand! What do the crests of a De Broglie elctron wave represent?

2007-09-04 03:27:12 · 3 answers · asked by kmm4864990 1

Regarding finding vectors

2007-09-04 03:11:20 · 1 answers · asked by Anonymous

If most astronomers agree the universe is moving away from each other and expanding,then why do they also agree that our galaxy the Milky Way and The Andromeda Galaxy are heading straight at each other.

2007-09-04 03:08:10 · 3 answers · asked by Anonymous

2007-09-04 02:25:37 · 5 answers · asked by Dragon 1

What are the main differences between fermions and bosons

2007-09-04 02:16:21 · 4 answers · asked by walt 2