Physics - December 2007

2007-12-23 05:45:16 · 6 answers · asked by gonzabott 1

How much time after the sun will stop lighting.

2007-12-23 05:21:56 · 10 answers · asked by kul 1

2007-12-23 04:46:04 · 11 answers · asked by jaykirs36 1

Can someone please help me describe the movement of
water and energy in a wave in the middle of the ocean? Thank you!

2007-12-23 04:15:21 · 3 answers · asked by Anonymous

2007-12-23 04:05:33 · 4 answers · asked by Anonymous

The Hubble Ultra Deep Field, the most important photograph ever taken, when they pointed the telescope at a dark spot in the sky and look back in time and found it was filled with more than we could have imagined.

http://www.youtube.com/watch?v=mcBV-cXVWFw

http://www.youtube.com/watch?v=e_1yQru3TdI

This is for people who haven't seen this image, because it is truely amazing and humbling and I believe it is important for people to see it.

2007-12-23 04:00:47 · 3 answers · asked by X 5

2007-12-23 03:50:09 · 4 answers · asked by Anonymous

i have checked into wikipedia.org
http://en.wikipedia.org/wiki/Sphere

i believe that the definition of sphere in maths differs from
one the one in physics particularly in astrophysics.i need to know them both please.

2007-12-23 03:46:23 · 2 answers · asked by Anonymous

in maths and in physics.

2007-12-23 03:43:07 · 3 answers · asked by Anonymous

They both go in the same direction away from you. How fast is the missile going in relation to you?

2007-12-23 03:36:09 · 6 answers · asked by Anonymous

http://s226.photobucket.com/albums/dd11/jackphotos123/?action=view¤t=FutureCycle.jpg

2007-12-23 03:29:50 · 5 answers · asked by Anonymous

the wings in the wind mills are large. but their speed is very slow. There is any connection between the electric fan and the fan in the wind mills.

2007-12-23 03:24:59 · 7 answers · asked by jerry 1

This can be either a very easy or very difficult question. Merry Christmas.

2007-12-23 02:10:39 · 7 answers · asked by Frst Grade Rocks! Ω 7

If all of universes energy is already here and we can only covert it from one form to another (example coal is converted into heat and that heat converted into electriity)

Well my guestion is where does all the heat energy go? when we convert fuel (gasoline) into conbustion energy in our cars a large amout of the energy is givin off as heat. that heat goes somewhere and with the millions of cars on the road that heat would have to accumilate somewhere.

The heat energy has to go somewhere or convert into another form. Where?????

2007-12-23 01:09:39 · 12 answers · asked by Anonymous

Suspend a heavy weight from a light string and attach a similar string below it. If you pull on the lower string with an steadily increasing force, the upper string will break; if you pull the lower string with a jerk, the lower string will break.

2007-12-22 22:54:01 · 3 answers · asked by Dan Michael D 1

the acceleration of an apple as it falls from the tree through the air.

2007-12-22 22:49:51 · 6 answers · asked by Dan Michael D 1

given 3 balls made of the same material but of different sizes (small, medium and large).

2007-12-22 22:46:35 · 2 answers · asked by Dan Michael D 1

if a copper plate and a steel plate of the same size and shape were released from the same height.

2007-12-22 22:19:05 · 12 answers · asked by Dan Michael D 1

In high school we used a program that you could add different types of objects with diffent mass, friction, and bounc settings and run tests to find out comes... any ideas what the program could be?

2007-12-22 20:02:30 · 2 answers · asked by Thirst For Answers 1

2007-12-22 19:52:44 · 6 answers · asked by maisha 2

well i was studying physics and learned that every objet that has mass has gravity and attract things like earth and moon. so why do we not do so.
answer quick and get 10pts.

2007-12-22 19:39:22 · 10 answers · asked by JAKE 3

2007-12-22 17:08:14 · 8 answers · asked by MacDaddy 2

In 1977, I was driving up Wilshire Blvd. in Los Angeles, and (at the time I didn't know this but figured it out after the fact) I somehow drove through a "time portal" or somehow entered a "parallel time dimension" and found myself in the FUTURE.

I was simply bewildered over this twin tower skyscraper finished in a gold mylar glass... and the astonishing thing about this structure was the "central span" which crossed over Wilshire and connected the North Tower with the South Tower... it wasn't merely a pedestrian bridge or mezanine, but an entire building as thick as the tower were wide, but turned on its side, and even the bottom surface was finished in this beautiful golen mylar.

The structure was located EAST of the Harbor Freeway EAST of downtown LA directly on Wilshire, and today, 29 years later, no such building exists there in this location.

As I drove beneath the central span, I purposely slowed down to absorb the details... I saw people entering the revolving doors.

2007-12-22 16:33:34 · 14 answers · asked by . 5

If there's no light, then there's no sun. If there's no sun then there's no heat. If there's no heat, there's no water. At least not liquid water. Clearly it reads moved upon the face of the waters and not ice. Just curious as to why that is.

2007-12-22 16:10:55 · 4 answers · asked by SYSV1RUS 3

question: Describe which simple machine can be used to make work easier by:
a. changing the direction the force is applied = pulley or gear (please tell me which is correct)
b. increasing the amount of force applied to the machine = wedge
c. increasing the distance over which the effort force is applied=inclined plane

2007-12-22 16:03:01 · 1 answers · asked by Anonymous

A thin, uniform, metal bar, 2.5 long and weighing 70 , is hanging vertically from the ceiling by a frictionless pivot. Suddenly it is struck 1.6 below the ceiling by a small 3-kg ball, initially traveling horizontally at 13 . The ball rebounds in the opposite direction with a speed of 6 m/s.

Find the angular speed of the bar just after the collision

2007-12-22 15:37:25 · 2 answers · asked by ????????????????? 2

How is that possible. Specifaclly time.

2007-12-22 14:33:25 · 5 answers · asked by Anonymous

2007-12-22 13:45:00 · 4 answers · asked by câmΦuflãgê 6

2007-12-22 13:02:25 · 9 answers · asked by ben t 3

How much of lost energy would be expected on this experiment?

Let's say you have a tunnel of 1 and 10mm diameter at 50m of sea level. The length of the tunnel is 1m. At the beginning of the tunnel but 50mm inside you have 1m diameter 2 blades aircraft propeller turning at the speed of 100kph. The propeller is set up on the tunnel as you would have set up on your small aircraft, meaning to pull the aircraft forward.

Behind the propeller another propeller (exact the same propeller as the first) so that the air being forced through the tunnel would spin the propeller. The distance between the two propellers is 300mm.

Would the second propeller spin as fast as the operating propeller (motorised)? No, certainly not you would say because of friction, heat and maybe other factors as well.

How much of energy wasted are we talking about here? what would be the difference in speed between the two propellers? what speed would you expect the second propeller to spin?

2007-12-22 12:24:30 · 3 answers · asked by mades 2