Physics - April 2007

the fabric of creation is nothing to toy with!! even einstien mentioned this fact. Why are we doing this and why is it becoming accepted behavior?

2007-04-11 08:33:59 · 4 answers · asked by spinzaar 3

What would their reality entail?

2007-04-11 08:22:17 · 12 answers · asked by hot carl sagan: ninja for hire 5

An airplane is flying in a horizontal circle at a speed of 105m/s. The 80.0kg pilot does not want his centripetal acceleration to exceed 7.00 times free-fall acceleration.

A. What is the minimum radius of the circular path?

B. At this radius, what is the NET force that maintains circular motion exerted on the pilot by the seat belts, the friction between him and the seat, and so forth?

2007-04-11 07:56:25 · 1 answers · asked by oscarjr1990 2

what's the definition and equation for relative speed? could you also give an example? thanx :D

2007-04-11 07:45:59 · 12 answers · asked by Anonymous

After a coin was accidently dropped on the floor, it is rolling around the circle R = 0.4m. The speed of the coin v = 1.00 m/s. What is the inclination angle of the coin to the vertical?

The coin is a thin uniform disk of radius r << R.
The force of friction is sufficient to keep the coin from slipping.
Ignore all enrgy losses, air, etc..

2007-04-11 07:29:36 · 4 answers · asked by Alexander 6

Ignore air resistance.

2007-04-11 07:24:11 · 4 answers · asked by Alexander 6

a 1.6 kg object moving at a speed of 7 m/s strikes a 1.4 kg object initially at rest. immediatly after the collision, the 1.6 kg object has a velocity of 1.4 m/s directed 31 degrees from its initial line of motion. what is the speed of the 1.4 kg object immediately after the collision?

2007-04-11 06:46:44 · 1 answers · asked by Anonymous

Do you think there are parallel universes? Some people think that schizophrenia or people who have a higher level of spiritual awareness are actually getting in touch with parallel universes. I wonder about that. Any thoughts?

2007-04-11 06:46:14 · 2 answers · asked by Waterloo 3

A 58.0 ohm resistor is connected in parallel with a 124.0 ohm resistor. This parallel group is connected in series with a 19.0 ohm resistor. The total combination is connected across a 15.0 V battery.

a) Find the current in the 124.0 ohm resistor.

b) Find the power dissipated in the 124.0 ohm resistor.

2007-04-11 06:44:53 · 2 answers · asked by Alan l 1

2007-04-11 06:40:18 · 2 answers · asked by Cris 1

A light bulb is wired in series with a 124 ohm resistor, and they are connected across a 125.0 V source. The power delivered to the light bulb is 23.2 W. What are the two possible resistances of the light bulb?

a) lower value

b) higher value

2007-04-11 06:38:06 · 1 answers · asked by Alan l 1

Consider a head-on collision between two dynamics carts. One is initially at rest and the other is moving (towards the cart at rest) at a constant velocity. Sketch a position vs. time plot for each cart before and after the collision (one plot for each ball that includes time before and after the collision).

Also can you describe the velocity vs time graph as well?

Obviously you can't draw it, so maybe describe what it would be like? thanks

2007-04-11 06:30:09 · 2 answers · asked by Ruphert J 1

I have seen lots of destruction from explosions but never any buildings. Seems it would be easier to believe if we had just a little bit of scientific evedince.

2007-04-11 06:03:28 · 2 answers · asked by james h 2

I understand the difference between AM and FM in terms of the carrier wave, but is there a difference in the way that they are broadcast?

2007-04-11 06:00:51 · 2 answers · asked by bartbart55 2

The response of the ear varies with frequency, showing a maximum at a particular frequency. Suggest a physical phenomenon which could lead to this type of behaviour?

2007-04-11 05:49:59 · 5 answers · asked by EC 2

What is the rms value of the voltage plotted in the graph? the web page for the graph is below:

http://i54.photobucket.com/albums/g99/cartoona222com/fisik1.jpg

Click into that web page and please help me qith my hwk!!

2007-04-11 05:26:06 · 0 answers · asked by Anonymous

two ice skaters approach each other at right angles. skater A has a mass of 22.6 kg and travels in the +x direction at 2.89 m/s. skater B has a mass of 86.5 kg and is moving in the +y direction at 1.7 m/s. they collide and cling together. find the final speed of the couple?

2007-04-11 05:24:15 · 2 answers · asked by Anonymous

2007-04-11 05:14:21 · 11 answers · asked by Alexander 6

2007-04-11 05:04:43 · 9 answers · asked by Anonymous 1

2007-04-11 03:30:55 · 8 answers · asked by Anonymous

what if you were traveling in your spaceship at the spede of light minus 70mph, and you threw an 80mph fastball?

would the baseball time stop and get infinitely massivce? wouldn't it be going faster than light if you were watching the spaceship and could see the ball through the windoows?

2007-04-11 02:54:23 · 5 answers · asked by Chris E 2

2007-04-11 02:51:30 · 7 answers · asked by Justin M 1

I need to design a Fourier Transform spectrometer to measure Zeeman splitting of a 1.0 micrometer spectral line, where the required resolution to observe the splitting is 0.1 Angstroms. What would this appartus look like? And what would the dimensions on the mirrors and mirror movement be?

2007-04-11 02:35:13 · 1 answers · asked by A C 1

i am measuring for the speed of light,
what errors should i look out for
http://img406.imageshack.us/img406/212/13869569ph2.png
about is a link to a photo of the experiment set up.
please list errors, that i should account for.

2007-04-11 02:08:04 · 3 answers · asked by Anonymous

2007-04-11 02:05:40 · 10 answers · asked by wink 1

Fluorescent materials are natural. For example Zinc Sulphide is one. Can we induce the fluorescence by some processing on any other material ,say quartz?

2007-04-11 01:14:30 · 1 answers · asked by knjoshipura 1

2007-04-11 00:57:58 · 9 answers · asked by eclecticmistress 2

The cosmos comprise, earth, air, water, fire and ether. Our body too contains the same in different proportions. Scientists have found our body contain most of the elements or compounds as available in cosmos at least in a miniscule level. Hence man is a replica of the cosmos in a smaller model. Do you agree?

2007-04-11 00:14:05 · 4 answers · asked by nagarajan s 4

Is the angular velocity of electron is constant in every atom and shell?

2007-04-10 21:40:58 · 4 answers · asked by Rauf 1

Is it possible for heat to flow ACROSS a vacuum? Explain
Note*** Heat is defined as the energy that flows from one object to another when there is a difference in temperature of the object.

2007-04-10 19:20:47 · 5 answers · asked by M^3 1