Physics - February 2007

How can he defy gravity?

2007-02-03 08:37:40 · 17 answers · asked by Anonymous

A galvanometer with a full-scale sensitivity of 2x10^-3A has a coil resistance of 100ohms. If it is to be used in an anmeter with a full-scale reading of 3.0A, what is the necessary shunt resistance?

2007-02-03 08:32:57 · 3 answers · asked by Deco 2

4. A boy standing on a bridge and threw a stone into the water below. He heared the sound 2 seconds later. How high is the bridge?

2007-02-03 08:21:34 · 3 answers · asked by nana g 1

Apparently hurricanes have been seen to generate micro instances of what appears to be time travel. I have read of pieces of straw being found impaled in a solid object such as metal or wood in the aftermath of a hurricane. I lost this reference and wonder if anyone out there has heard anything about this. As I recall the tremendous speed of the vortex was thought to be relevant. Any info on this phenomena?

2007-02-03 08:19:58 · 2 answers · asked by antes 2

Doing waves in Physics. I have to know this to avoid embarrassment as my brother (4 years my junior) is closest so far, something to do with waves not being totally reflected. It's kind of a competition between all of us A-level physicists, and my little brother, who likes stealth bombers! I would really appreciate an answer because a guy in the year above who's just got into Oxford uni didn't have a clue. Is this cheating? Help!

2007-02-03 08:14:59 · 8 answers · asked by lottie 2

1. An arresting device on a carrier deck stops a plane in 152m. If the plane is arriving at 66.7 m/s, find the acceleration of the plane. (i only c 3 variables in this prblem and according to the text book u need 4 variables then u can use an equation)...plz help

2007-02-03 07:54:40 · 1 answers · asked by no name 1

Is information matter? Does it take up space in the same way an object such as a chair does? Will we eventually have so much technology that we must unload/store data in outerspace?

2007-02-03 07:32:35 · 4 answers · asked by Anonymous

To filter out a mono component, It gives good results to subtract one one wave from the other, the resulting waveform will have any underlying sound that are identical in both channels muted.

Can you think of a way to filter out these mono sounds? (keeping only the sounds that repeat in both channels?)

2007-02-03 06:48:42 · 3 answers · asked by Anonymous

i have a science paper and i know what im going to write for a part of it, but i dont know which word is right(i think its either fast or slow but its something like that)

when you add energy to a liquid, the particles go ____________ so the temperature of the liquid rises.

2007-02-03 06:32:35 · 5 answers · asked by jessica :] 5

gravity related question this is. please know me about gravity force.

2007-02-03 06:19:36 · 4 answers · asked by jigneshpatel234 1

If you have a tub of ice with the same mass as a tube of salt water which would return to room temp faster. Why?

2007-02-03 06:10:42 · 2 answers · asked by qualityhomeservice1 2

2007-02-03 05:51:28 · 5 answers · asked by awantwin2004 2

A quart container of ice cream is to be made in the form of a cube. What should be the length of a side in centimeters? (Use the conversion 1 gallon = 3.786 liter)

2007-02-03 05:31:35 · 2 answers · asked by Christina 2

2007-02-03 05:29:36 · 4 answers · asked by sjay0859 1

2007-02-03 04:56:03 · 7 answers · asked by Ryan K 1

constant speed = object cover equal distance in equal amount of time
velocity = both speed and direction

2007-02-03 04:53:33 · 3 answers · asked by sunny p 1

velocity = both speed and direction

2007-02-03 04:48:55 · 2 answers · asked by sunny p 1

after the material explodes, what is left there? electrons,protons,neutrons or atoms or just energy?

2007-02-03 04:44:00 · 6 answers · asked by Anonymous

i am doing a project and i can't find any imformation please please help me.

2007-02-03 04:43:43 · 2 answers · asked by 5035216 1

Mobile works on baterry ( technically a group of cell),but still is known as CELL (cellur phone).Why ?

2007-02-03 04:38:36 · 5 answers · asked by Anonymous

2007-02-03 04:32:26 · 2 answers · asked by manikant k 1

2007-02-03 04:21:42 · 3 answers · asked by manikant k 1

Find the magnitude and direction of the current in the 2.0 resistor in the drawing if R = 3.0 and V = 2.5 V.

http://i21.photobucket.com/albums/b272/Cajunboiler/p20-76alt.gif

I know the direction is left. That's obvious. The thing that is confusing me about this problem is the extra voltage. I'm not sure what to do with it in helping me find the current. If there was only one, then I would definitely know how to do it.

2007-02-03 04:16:17 · 2 answers · asked by Confused 1

Pulley A is suspended from a rope E, with one end of therope attached to the ceiling and the othewr end threaded over pulley B. Pulley B is suspended from the ceiling witha a rope G. From pulley A a 60 kg mass is suspended witha arope F. At the end of the rope E threaded over pulley B is a mass m which keeps the system in balance. Draw a free body diagram for each mass and for each pulley and calculate the value of mass m.

2007-02-03 04:16:13 · 4 answers · asked by Anonymous

Also, how does M-Theory differ from the original Strong Theory?

2007-02-03 04:12:13 · 7 answers · asked by Anonymous

if a girl travels with a velocity of 20m/s[W] for 10seconds and then accelerates at 2m/s [E] for 4seconds. what is her diplacement after 14seconds? choices are:
a) 64m [W]
b) 216m [W]
c) 264m [W]
d) 280m [W]
e) 416 m [W]
thanks!!

2007-02-03 03:58:22 · 5 answers · asked by Anonymous

Why do the size of the microchips keep decreasing yet the memory keeps increasing? What do we owe this to? Why do semiconductors play a major role? Also why is the choice of the wire so important?

Why do the size of the microchips keep decreasing yet the memory keeps increasing? What do we owe this to? Why do semiconductors play a major role? Also why is the choice of the wire so important?
Why do the size of the microchips keep decreasing yet the memory keeps increasing? What do we owe this to? Why do semiconductors play a major role? Also why is the choice of the wire so important?
http://www.cnn.com/2007/TECH/01/25/densest.memory.circuit.ap/index.html
http://www.livescience.com/technology/070130_memory_chip.html
theres some info on those links

2007-02-03 03:46:07 · 1 answers · asked by Anonymous

2007-02-03 03:41:05 · 3 answers · asked by abcd1234 1

do cfl light bulbs run on ac or dc current?

2007-02-03 03:26:47 · 9 answers · asked by nasserc267 1

NASA

2007-02-03 03:18:25 · 4 answers · asked by sego lily 7