Physics - February 2007

The apparatus that we will use is called a force table a circular table with it's circumference marked off in degrees from 0 to 360. Weights can be hung over the sides of the table with strings attached to a ring at the center.

1 Weight is hanging with 250 gm g at 0 degrees. We want to find out where can you place a 200 gm g weight and a 100 gm g weight so that the system balances. Try using components ot calculate the balancing angle.

2007-02-16 02:57:00 · 1 answers · asked by antihero1776 1

2007-02-16 02:56:26 · 3 answers · asked by Anonymous

Two particles 'P' and 'Q', of masses 0.3kg and 0.2kg respectively, which are free to move on a smooth horizontal table. A vertical wall is situated at the right end of the table (right of P and Q). the particles are moving directly towards the wall in the same straight lane, 'P' with speed 3.2ms-1 and 'Q' with speed 1.2ms-1,

'Q' hits the wall and rebounds from it with speed 2ms-1. the particles subsequently collide, after which they move in opposite directions, 'P' with speed 'v'ms-1 and 'Q' with speed '4v'ms-1

Find the value of 'v' ?

2007-02-16 02:45:39 · 3 answers · asked by Leonidus 2

2007-02-16 02:19:35 · 6 answers · asked by Anonymous

why are most uv them red

2007-02-16 02:18:18 · 2 answers · asked by Anonymous

Two wagons, each of unloaded mass 1000kg, are free to travel on a straight horizontal track. One of the wagons carries a load of mass 'm'kg and the other is empty. the empty wagon is travelling at 5ms-1 when it runs into the loaded wagon which is stationary. immediately after the collision the empty wagon continues in the same direction with speed 0.5 ms-1, and the loaded wagon starts to move with speed 1.5ms-1. Find the value of 'm' ?

2007-02-16 02:18:18 · 4 answers · asked by Leonidus 2

2007-02-16 01:59:33 · 3 answers · asked by Anonymous

I know what it involves, but I don't really know what I can make it out of or anything. I have to be able to see the cotton inside, so it'll probably have to be partly made of glass. Anyone know how or know of a place I can get instructions? Thanks.

2007-02-16 01:46:24 · 1 answers · asked by Wael K 2

Who can tell me what determine the fluid's viscosity?

2007-02-16 01:44:38 · 3 answers · asked by chengzhao zhang 1

2007-02-16 01:35:16 · 4 answers · asked by count_dr 2

What is antimatter(in details plz)!!! Is it real? Where it was produced? How comes its not in use if it does exists!!!

2007-02-16 01:26:44 · 3 answers · asked by KACKbIP 1

2007-02-16 01:26:42 · 2 answers · asked by nemesis 1

A human canonball with a mass of 80 kg is fired out of a cannon with a force of 6,400 N. find the acceleration


Calculate the force of the earth's gravity actint on a person with a mass of 50 kg


What is the net force on a 1500 kg elevator acceleating at 2.2 m/s/s


What net force is neede to accelerate a 67 kg cart at 17 m/s/s

2007-02-16 00:52:15 · 3 answers · asked by Caro♥♪ ♫ 2

A particle of mass 50kg is placed on a ramp at 30 degrees, forces acting on it are Weight, Reaction and Friction, the weight (previously figured out is 490N, how can I calculate the component of W which acts down the slope?

2007-02-16 00:35:53 · 5 answers · asked by Anonymous

can you please give me samples problems about linear expansion, volume expansion and area expansion? together with the sample problems are the solutions of how'd you get the answer. thank you!

2007-02-16 00:29:14 · 1 answers · asked by jhaine 1

Suzie (of mass 98 kg) is roller-blading down
the sidewalk going 40 miles per hour. She
notices a group of workers down the walkway
who have unexpectedly blocked her path, and
she makes a quick stop in 1.1 seconds.
What is Suzie's average acceleration?
Answer in units of m/s^2. Also, what force was exerted to stop her, and where did this force come from?

Okay, so for the first part I subtracted 40 from 0 (for initial and final velocity) and got -40. Then I divided by 2 to get 20. I divided it all by 1.1 and got an answer, but that answer is in mph/s. How do I convert it? Is that how I'm supposed to do it?
Then for the force I multiplied 98 by my answer for acceleration. I got an answer, but I know it's wrong because I didn't convert the last answer.
As far as the force that is stoping her, isn't it a combination of the friction of rollerskates, gravity, the friction of her against air, and the ground pushing up?

2007-02-16 00:27:27 · 4 answers · asked by Nikita R 2

2007-02-16 00:27:10 · 6 answers · asked by Anonymous

One conductor is thrice as long and twice as thick as the second. What is the ratio of the power transformed in the first relative to the second?

2007-02-16 00:18:59 · 3 answers · asked by webogirl 2

How can choice exist? Every action leads to a consequence, according to the laws of nature, the laws of science. Given that our brain is nothing more than a biological machine, processing information how it is programmed to do by nature and nurture, where does choice fit in?

Think about it, our nuture is based on our parents nurture. If you go back enough generations, the nurture would be purely based on nature (consider algae). So, every choice we think we make is just the result of our programming, based on the hardwiring of our brain? If there is no choice, there is no guilt, blame or consequence!

On the other hand, if you believe in choice you cannot believe the normal laws of science describe every aspect of the universe. Mind you, choice is an illusion and you may believe it because you are programmed to 'chose' to believe it.

I see no way an Atheist can believe in choice. Can anyone elaborate on this for me?

2007-02-16 00:03:16 · 5 answers · asked by Mawkish 4

2007-02-15 23:25:36 · 11 answers · asked by Guy 2

2007-02-15 23:17:08 · 4 answers · asked by Anonymous

2007-02-15 22:29:16 · 6 answers · asked by Jack 1

2007-02-15 22:01:33 · 3 answers · asked by ? 2

What is the advantage of a 2-beam Spectrophotometer?

2007-02-15 21:20:34 · 1 answers · asked by jenstarr 4

2007-02-15 21:10:22 · 3 answers · asked by tallthatsme 4

2007-02-15 20:53:09 · 2 answers · asked by ramin 1

I want to check the configuration of Hg

2007-02-15 20:11:54 · 7 answers · asked by Anonymous

same direction for a time. Then, an acceleration of equal magnitude is experienced in the opposite direction for the same time.
What is the velocity after this?

2007-02-15 20:11:34 · 5 answers · asked by p6 1

One way of keeping warm on a cold nite, in the days before electric blankets, was to take a hot water bottle to bed.
A) If a hot water bottle contains 1.00kg of water and when in the bed has a temperature of 90 degrees celsious, how much internal energy will it lose as it cools to 25 degrees celsious??

2007-02-15 20:09:09 · 1 answers · asked by Anonymous

I would like to understand how thrust contributes to verticle lift. How much thrust do my legs have to produce to lift me 1 meter off the ground or 10 meters or 100 meters etc. What is the formula that will tell me Xthrust will propel Xkilos from the ground Xheight.

2007-02-15 19:29:10 · 4 answers · asked by ERIC W 3