Physics - March 2007

Not one object or another being more massive. I don't create a gravitational force that keeps a peanut close to me or that repels the peanut. What exactly creates the force that we know as gravity? An attraction between the molecules of the Earth's core and our bodies? Anything, I'm open to suggestion.

2007-03-04 05:40:26 · 7 answers · asked by Anonymous

I've solve part A of this problem but I'm not exactly sure how to approach part B. Any guidance would be appreciated.

A person whose eyes are 1.60 m above the floor stands in front of a plane mirror. The top of her head is 0.15 m above her eyes.

(a) What is the height of the shortest mirror in which she can see her entire image?

Answer is .875 meters

(b) How far above the floor should the bottom edge of the mirror be placed?

2007-03-04 05:33:58 · 1 answers · asked by larkinfan11 3

It may have degraded so that it can no longer heat a steam generator for the turbines in a poewer plant, but it is still hot enough - and will be for centuries to come - to run a Sterling cycle engine, which could be used to turn generators or alternators. So why is it wasted by being burried or stored, instead of used for it's remaining energy? Just shield the radiation (like a reactor is) and let it remain in service and profitable!

2007-03-04 05:31:35 · 3 answers · asked by barefoot_always 5

I read about the Van De Graaf generator which can produce large amount of electricity. Please tell me another way!

2007-03-04 05:22:24 · 3 answers · asked by Suhel 1

An airbaloon drops a bottle of beer at 491,5 metres and the bottle reaches the ground in 10 seconds. It lands near a bear. What is the bear's colour and whether or not she will be drunk in the end.

2007-03-04 05:10:13 · 10 answers · asked by kairi92 2

2007-03-04 04:47:01 · 1 answers · asked by Adrian F 1

This is for an experiment at school. We will be dropping this from about 1 story high. I am really looking into how I can slow down the egg instead of protecting the egg. Again NO PARACHUTES, my teacher says we have to be creative.

2007-03-04 04:36:41 · 5 answers · asked by Axel's Fire 1

every tonne of limestone will have removed 0.44 tones of caron dioxide from the atmosphere. limestone is a very mcuh more common rock than coal (coal beds are just a few metres thick, limestone beds may be hundreds or even thousands of metres thick). which has removed more carbon dioxide from the atmosphere, coal or limestone? explain your answer

2007-03-04 04:18:13 · 4 answers · asked by thirteen 1

n a physics experiment i measured voltage using a digital voltmeter and current using an ammeter so that i could calculate a resistor's resistance and i would like to know what is the major source of error, either voltage or current. your help would highly be appreciated!!!!

2007-03-04 04:00:53 · 7 answers · asked by KrazySweetie 4

if people hear noises that comes from nowhere or see images that disappears wouldn't it mean either , A) a ghost, or B) a weak connection to another dimention

2007-03-04 03:57:53 · 3 answers · asked by Arnold 1

Oxygon boils at -183*C, argon at -186*C and nitrogen at -196*C. Suggest another way that argon could be separated from air.

2007-03-04 03:56:26 · 2 answers · asked by thirteen 1

A beam of light is emitted 7.33 cm beneath the surface of a liquid and strikes the surface 6.44 cm from the point directly above the source. If total internal reflection occurs, calculate the minimum index of refraction of the liquid?

How would you solve this problem?? I only know Snell's equation and this doesn't seem to fit into it.

2007-03-04 03:52:03 · 3 answers · asked by Anonymous

please tell me the best sites and sources to find answer

2007-03-04 03:38:47 · 6 answers · asked by Anonymous

Explain to me in details what is a rheostat (in electricity). Why do we use it? Where do we place it? What does it change?

2007-03-04 03:38:31 · 7 answers · asked by Anonymous

2007-03-04 03:30:25 · 14 answers · asked by Zefram 2

a 2100 kg car starts from rest at the top of a 5.0 m long driveway that is inclined at 20 degrees with the horizontal. If an average friction force of 4000 N impedes the motion, find the speed of the car at the bottom of the driveway.

2007-03-04 03:28:55 · 2 answers · asked by Anonymous

Seriously, my wife was working a crossword puzzle and she needed to find the chemical element for a protein of some sort to complete the puzzle and my 5 year old son wanted to now how the little balls fit together and what purpose they served. So, I asked him if he wanted to learn to split the atom and he said yes. So, is there a website a Daddy could send his 5 year old son to in order to learn how to split the atom?

2007-03-04 03:23:52 · 6 answers · asked by Anonymous

In a room there is a carpet and a tiled stone floor. When you walk in bare feet the carpet feels warmer than the stone. WHY?

2007-03-04 03:23:38 · 6 answers · asked by Anonymous

A. A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle with respect to the horizontal. Let M=2.00 kg , X= 4.00 m, angle= 37.0, F=15.0 N and Uk= 0.400

how much work is done by the friction force and by F???

2007-03-04 03:22:03 · 1 answers · asked by Anonymous

2007-03-04 03:20:13 · 3 answers · asked by stevemxusa 6

m = 1 l
delta t = 90°C
P = 500W

need to find time

some one help me with the formula

2007-03-04 03:18:03 · 2 answers · asked by Ryan Power 2

sorry not enough room, could we gain 99.99999999999 speed of light without exponential inflation on the mass.

2007-03-04 03:05:15 · 3 answers · asked by chingow 2

an anyone give me any facts or properties on electromagnetism

2007-03-04 03:05:12 · 3 answers · asked by MJ Fan 23 2

2007-03-04 02:05:32 · 2 answers · asked by Samlovesjesea 1

2007-03-04 02:04:17 · 8 answers · asked by Tom P 1

2007-03-04 01:51:50 · 13 answers · asked by jerry_1117_rivera 1

i am not able to depict the picture . i ll give u the details.
the circuit has two series resistances namely 18 ohm and 12 ohm. it has two parallel resistance 6 ohm and 6 ohm. the voltage supply is 30 volts. the question is " find the voltage drop across 6 ohm. a resistance of 18 ohm is connected to the positive side of the battery of 10 volts and to the other end of the resistance 6 ohm is connected in parallel.
the answer is given as 24 i dont know the steps to arrive the answer. please help

2007-03-04 01:49:17 · 3 answers · asked by aparna 1

2007-03-04 01:37:46 · 10 answers · asked by clive o 1

What difference wouod it make if a golf ball was sunk in sugar solution and why?

2007-03-04 01:21:22 · 8 answers · asked by Anonymous

two earthquakes were measured at central park 3-4-2007. it was found that the two differ by half a point.

2007-03-04 01:14:24 · 1 answers · asked by endgame1915 3