Physics - October 2006

2006-10-23 20:36:17 · 2 answers · asked by selot62 1

I am a new product developer and I have no formal training in chemisrry or atomic physics. If you're in the know as it pertains to atomic chemistry Boy would I like to talk to you
my direct email is

dylstar7@yahoo.com

I've been toying with geophysic for some time now
my calling is to stop global warming in its tracks and through the creation of new and distinct forms of thinking that stretch well beyond Al Gore's primary adgenda- to actually leave my mark in history by rapidly counteraqcting a thousand years of global abuse by our species

2006-10-23 20:20:04 · 3 answers · asked by Anonymous

2006-10-23 20:03:28 · 4 answers · asked by Anonymous

Two blocks (A and B) are tied together and are being pulled along horizontally by a rope attached to Block A with a force of 84N. Block A is 35kg with a coeifficient of friction of .02. Block B is 16kg with a coefficient of friction of .03. Find the following.

What is the accelration of either block?
What is the net Force on Block A?
What is the Tension on the rope between the two blocks?

16kg T=? 35kg
[B]----------------[A]------- > 84N
u=.03 u=.02

2006-10-23 19:58:35 · 3 answers · asked by Anonymous

Our physics teacher told us to build something that uses lenses. What projects can you suggest? It would be pretty nifty nice if you can show me blueprints... hehe.... that ends my question... xiao..

2006-10-23 19:48:49 · 4 answers · asked by terabyte 1

2006-10-23 19:23:07 · 4 answers · asked by dizzyandconfused 2

The earth behaves like a magnet and the shape of the earth's magnetic field resembles that of a Bar magnet of length 1/5th of the earth's diameter,buried at its centre.
What is the role of this Magnet?has it got something to do with gravity?

2006-10-23 18:47:34 · 8 answers · asked by shreenidhi 1

You know how on tv and that people shoot a gun into the air above their head like a warning does anyone know if when it comes down it is likely to kill someone

2006-10-23 18:24:59 · 24 answers · asked by abbyabbyabby123 1

Is there a physics equation to explain bubbles in fluids?

2006-10-23 17:56:01 · 10 answers · asked by Jae G 2

When A YDSE (young's double slit experiment) is performed with white light (multi-chromatic). will there be a dark band.
[for more details see lecture 33, 43rd min in the following link.
http://ocw.mit.edu/OcwWeb/Physics/8-02Electricity-and-MagnetismSpring2002/VideoLectures/ ]

2006-10-23 17:53:32 · 3 answers · asked by Anonymous

A man pulls a 50kg box at constant speed across the floor. He applies a 200N force at an angel of 30 degrees.

A. Sum the forces in the x-direction. What is the value of the frictional force opposing the motion?

B. Sum the forces in the y-direction. What is the value of the normal force?

2006-10-23 17:23:19 · 7 answers · asked by Greg 2

A quartback throws the football to a stationary receiver who is 31.5 m down the field. If the football is thrown at an initial angle of 40 degrees to the ground, at what initial speed must the quartback throw the ball for it to reach the receiver? What is the ball's highest point during its flight?


Please show your work so I'll have an idea of what is going on.

2006-10-23 16:46:14 · 5 answers · asked by alawrence108 1

then the instantaneous velocity at a height = (1/2)the maximum height,is u [(1-(sin^2 X)/2)]^(1/2) (i,e product of initial velocity and the square root of the difference of 1 and half the square of sine of the angle of projection). Now the question is that,as the horizontal velocity of a projectile is constant,the cosine component of this instantaneous velocity should give the horizontal velocity i,e
u cosX.But where does it ?I am unable to convert the expression of ins. velocity to u cosX.Please help

2006-10-23 16:39:49 · 3 answers · asked by Anonymous

2006-10-23 16:32:53 · 1 answers · asked by Umbrella 2

A grinding wheel in the shape of a solid disk is 0.260 m in diameter and has a mass of 2.50 kg . The wheel is rotating at 2250 rpm about an axis through its center.
<<>>
If anybody could give me any hints I would really appreciate it. THANKS GUYS!!! :)

2006-10-23 16:12:29 · 4 answers · asked by cheezo12 1

Assuming the lake is roughly heart-shaped and measures 250miles from left to right, 150miles from top to bottom, and is about 230ft deep.

2006-10-23 16:03:18 · 4 answers · asked by Yung 1

Okay so energy can't be created or destroyed it can only move from one form to another. So I have a full tank of gass (Chemical Energy) so when I'm driving that energy is transformed into kinetic to get me to wherever I'm going although some is lost in sound and thermal. Where do those energies go after that?

2006-10-23 15:58:52 · 3 answers · asked by K. Rhen Hunt 2

If I have a block that weighs 1 kg and a block that weighs 0.1kg, would the coefficient of static friction (max) change for the two?

2006-10-23 15:49:34 · 6 answers · asked by leikevy 5

2006-10-23 15:23:35 · 2 answers · asked by rohit_gupta322 2

We were haveing a disscussion in class today and I was wondering what you guys think of it
The debate was that what is the point of developing concepts that employ frictionless surfaces, ignore air resistance, ect. are bogus because they have no meaning in the real world; and therefore are of no use to us and instead of focusing on things like this we should be focusing on "real physics" instead

I was just wondering what everyones opinion was
thanks alot!

2006-10-23 15:02:37 · 9 answers · asked by indrul1 3

2006-10-23 14:48:18 · 1 answers · asked by bowwowzbabiigurl309 2

A race car has a mass of 710 kg. It starts from rest and travels 40.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?

2006-10-23 14:41:42 · 3 answers · asked by yoo whoo 1

After a day of testing race cars, you decide to take your own 1550-kg car onto the test track. While moving down the track at 10.0 m/s, you uniformly accelerate to 30.0 m/s in 10.0 s. What is the average net force that the track has applied to the car during the 10.0-s interval?

2006-10-23 14:40:03 · 3 answers · asked by yoo whoo 1

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor in kg*m/s?

2006-10-23 14:39:45 · 1 answers · asked by activegirl 1

A box slides down a 34° ramp with an acceleration of 1.16 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

i already did the free body diagram and i know i have to find the magnitude using geometry but i don't know how to do it.

2006-10-23 14:27:48 · 1 answers · asked by tingerpoo 2

Besides its weight, a 2.8 kg object is subjected to one other constant force. The object starts from rest and in 1.20s experiences a displacement of (4.20i - 3.30j) m, where the direction of j is the upward vertical direction. Determine the other force.

I don't understand exactly what their asking for....is it an exact number or the direction? How do would you solve this? Help, thanks.

2006-10-23 14:23:28 · 5 answers · asked by andrew c 1

Hi, i need to find a instrument or machine that can measure the oscillations of something fast like a propeler or a fan.. THNZ!!!!!!!!!!!!!!!!!!1

2006-10-23 14:19:04 · 2 answers · asked by Chello 1

Can velocity ever be zero while acceleration is not zero?
2. Can velocity be constant while speed varies?
3. Can velocity reverse direction while accleration is constant?
4. Can speed increase while acceleration decreases?

If you could help me in answering these questions it would be of great help to me
thanks

2006-10-23 14:14:00 · 6 answers · asked by indrul1 3

In other words, if I had piece of material that is 1 foot by 1 foot, and I put it in a river flowing at 3 MPH so that it is perpendicular to the water flow, how many pounds of pressure would be on that square?
Thanks!

2006-10-23 13:40:42 · 1 answers · asked by danzunko 2

?? I am trying to enter a contest, but I am trying to think of something smart. Things that follow laws, like "equal and opposite reaction" where some guy is bumping into two other guys.. stuff like that. what should i do?

(The more complicated the better)

2006-10-23 13:28:08 · 6 answers · asked by Anonymous