Physics - September 2007

i need 10 physics related facts that has to do with superlens??

2007-09-15 11:13:18 · 1 answers · asked by C12H22O11 4

I understand that the speed increases per second per second until a maximum rate is reached - what are the logistics

2007-09-15 11:02:49 · 17 answers · asked by donjamste 1

2007-09-15 11:00:54 · 2 answers · asked by C12H22O11 4

If a microorganism were swimming from right to left across your field of view under a compound light microscope, which way would you move the microscope slide to keep it in view?

And what about if you were viewing it from a stereo microscope, which would you move it????

2007-09-15 10:44:04 · 1 answers · asked by Miche12x 2

2007-09-15 10:39:02 · 1 answers · asked by Miche12x 2

If I have 30 squared meter area CUBIC surface enclosing a point charge, and the question ask me to find the Flux generated on the surface, is it possible for me to use a 30 squared meter area SPHERICAL surface in my calculation instead because it is easier to integrate and taken the fact that the Flux generated by this one point is a constant?

I know you can also do Q/epsilon to get the Flux, but would the above method get the same answer too?

2007-09-15 10:23:54 · 2 answers · asked by Anonymous

Two point charges are placed on the x axis. The charge +2q is at x = 1.5 m, and the charge -q is at x = -1.5 m.

(a) There is a point on the x axis between the two charges where the electric potential is zero. Where is this point?
x =.... m

(b) The electric potential also vanishes in one of the following regions. Identify the appropriate region.
1. Region 1: 5.0 m > x > 1.5 m
2. Region 2: -1.5 m > x > -3.0 m
3. Region 3: -3.5 m > x > -5.0 m

(c) Find the value of x referred to in part (b).
x = ........m

2007-09-15 10:20:06 · 1 answers · asked by ? 1

A typical 12 V car battery can deliver 6.0 105 C of charge. If the energy supplied by the battery could be converted entirely to kinetic energy, what speed would it give to a 1400 kg car?

.....m/s?

2007-09-15 10:18:17 · 2 answers · asked by ? 1

AN OLYMPIC jumper leaves the ground at an angle of 23 degrees and travels through the air for a horizontal distance of 8.7m before landing. What is the take off speed of the jumper?

2007-09-15 10:17:29 · 2 answers · asked by Anonymous

the work required to strech the spring from 10 to 20cm is more than required to strech it from 0 to 10cm, according to Hookes Law

how much does it take to strech from 0 to 10?

how much does it take to strech fom 10 to 20?

2007-09-15 10:08:33 · 3 answers · asked by Pascal 4

The acceleration of gravity is 9.8 m/s^2. If the ball remains in the air for 5.5 seconds, how high does it rise?

2007-09-15 10:00:51 · 1 answers · asked by kp86 2

shouldnt protons repel?

2007-09-15 09:59:42 · 3 answers · asked by wik 2

2007-09-15 09:26:00 · 6 answers · asked by Anonymous

At t= 0s a truck is stopped at a traffic light. When the light turns green, the truck starts to speed up, and gains speed at a constant rate until it reaches a speed of 20m/s 8 seconds after the light turns green. The truck continues at a constant speed for 60m . Then the truck driver sees a red light up ahead at the next intersection, and starts slowing down at a constant rate. The truck stops at the red light, 180m from where it was at .


Draw accurate graph for the motion of the truck.

I understand that the first part of the graph is like a parabola, and at one point its linear, and then becomes almost horizontal..can anyone draw this graph please, or the values or x between interval time of 0-15

2007-09-15 08:31:14 · 1 answers · asked by Yahoo! Answers Guest Member 1

2007-09-15 08:19:50 · 6 answers · asked by CubanNena 1

You have a table with a box on top attached to two boxes, one hanging over each side, the boxes are attached, one on each side, by a rope running through a pulley. The box on the left is m1, the box on right is m2 and the box on top is m3.

What is the acceleration of the system if
m1 = 0.25 kg,
m2 = 0.50 kg,
m3 = 0.25 kg?

What is the acceleration of the system if
m1 = 0.35 kg,
m2 = 0.15 kg,
m3 = 0.50 kg?

2007-09-15 08:18:38 · 3 answers · asked by Pascal 4

A painter drops a bucket from a ladder on the side of a building. The acceleration of gravity is 9.8 m/s
What is the speed (m/s) of the falling bucket after 2.42 seconds?
(neglect drag force)

Any help is appreciated! :)

2007-09-15 07:18:39 · 5 answers · asked by Catalina 2

Okay this is clearly impossible, but I'd like to know why:

If you managed to get a vehicle (let's say a bus) to travel at the speed of light and you were sitting at the back of the bus and needed to go to the loo; you'd get up, stroll down the bus and have not only had a poo but in the process you'd have managed to travel faster than the speed of light - quite a turd-trip.

I've posed the same question to my teachers and other inter-mal-ectual types and the closest thing I've got to a reasonable answer was; "you want to talk to Einstein, pal". (So very, very helpful)

So, can any of you geeks come up with the answer?

Just to clarify:

I know a bus isn't the best vehicle to reach light speed - It's a silly analogy - I know it'd never make it to that speed between stops. Please substitute with some other human sized container that could possibly make it.

2007-09-15 06:46:04 · 10 answers · asked by Will T 2

2007-09-15 06:36:46 · 6 answers · asked by kano7_1985 4

Yes, this is homework help...

An object is said to have a negative potential energy. Because it is preferable not to work with negtative numbers, how can you change the value of the objects potential energy without moving the object?

2007-09-15 06:25:39 · 6 answers · asked by sugar_and_spice 2

We know that when clouds get fertilized, their negative charge is placed in the bottom of the cloud, near to the ground, so that it can be easily transfered to the earth. and we know that if we connect a charged obstacle to the earth, it will become neutral, giving electron from or sending it to the earth. So whats the explanation for this behavoiur??? I know that the earth is too big, but it doesnt satisfy me. It MUST have a known charge, + or -,how can it send or gain electron if its neutral???

2007-09-15 06:21:57 · 3 answers · asked by maral namak 1

I'd like a less patrinizing veue, because my science didn't exactly explain it well. how is there no such thing as a closed system?

2007-09-15 06:17:54 · 3 answers · asked by Crazygirl ♥ aka GT 6

is there other colour ,other then that we can see?is there any other taste that we never tried?is there any voice that we never ever heard?can we create or discover any other new sound or voice?

2007-09-15 06:05:48 · 5 answers · asked by Anonymous

Well im a feshmen and taking physics and i dont know how to calculate free fall help me?!

2007-09-15 06:00:18 · 5 answers · asked by shawnmp93 1

If a person can jump a maximum horizontal distance (By using a 45 degree projection angle) of 3.0m on the Earth, what would be his maximum range on the Moon, where the free-fall acceleration is g/6 and g=9.8m/s^2? Repeat for Mars, where the acceleration due to gravity is 0.38g.

The answers are:
18m on the moon; 7.9m on Mars.

How do I arrive at those answers?

2007-09-15 05:46:01 · 1 answers · asked by angelic_vizn 2

Its not Homework but im not really getting it in Class. Can someone explain the whole idea?
Thanks

2007-09-15 05:35:36 · 6 answers · asked by Gabby M 1

It's easy to think of examples of matter converted to energy (combustion, nuclear energy, etc.) but what examples are there of the reverse process?

2007-09-15 04:29:19 · 14 answers · asked by GCB-TO 3

2007-09-15 03:48:31 · 15 answers · asked by Anonymous

News stories say the world's official kilogram is loosing mass -- or is it the other test mass that are gaining weight? What do you think should be the definition of the kilogram, and how would you make one in your multi-million dollar lab?

2007-09-15 03:03:33 · 4 answers · asked by morningfoxnorth 6

please explain.

2007-09-15 02:23:31 · 8 answers · asked by Anonymous