Physics - December 2007

My friend thinks he's all smart and tells me according to physics, playing an intense game of basketball for and hour requires more energy than running on a treadmill for and hour or swimming for an hour, he tells me its better and it requires more power. I know its not true, y do u get so much more exhausted while running and swimming then But he uses all these dumb equations. How do I say that running or swimming requires more energy, or power, or work or whatever physics term he wants to use.

2007-12-22 12:04:50 · 5 answers · asked by Dhoopy 3

If matter can be neither created nor destroyed,where does it go.I know that atoms are pulled apart once inside,but what happens to them.

2007-12-22 11:59:00 · 10 answers · asked by Wes 2

Physics...doing research on Albert Einstein

2007-12-22 11:09:16 · 3 answers · asked by Einstein Freak 2

2007-12-22 10:35:02 · 8 answers · asked by Cracker's back 2

In endless space....does size exist ? Does BIG disapear ?

2007-12-22 10:12:15 · 4 answers · asked by woodster 4

Please give me a scientific answer. For example ,Like with wood, can it be 100 percent dry, if it can not be , why not. If it is 100 percent dry then what is it called? Cant be called wood

2007-12-22 10:04:30 · 5 answers · asked by Fan Of Obama 1

I am thinking of applying for a Physics class as I find some of the things people have told me about physics to be really interesting. The problem is that I'm not very good at mental arithmetic and math was not my strongest subject. How important is mental arithmetic and maths ability when studying physics?

2007-12-22 09:48:16 · 4 answers · asked by Anonymous

2007-12-22 08:28:22 · 2 answers · asked by ERO F 1

2007-12-22 08:09:25 · 8 answers · asked by TOOCOOL187 1

2007-12-22 07:34:06 · 16 answers · asked by Anonymous

is true by taking some examples from real life. Then, explain how Newton’s third law applies in those situations.

2007-12-22 07:24:45 · 9 answers · asked by Anonymous

Will the forcce of gravity itself determine if time slows or speeds up depending on the strength of the gravity well and the distance with respect to the gravity sorce?

2007-12-22 06:58:35 · 3 answers · asked by Little Wing 2

Why is a meter/second more meaningful than a (meter + second) unit?

etc.

2007-12-22 06:55:45 · 6 answers · asked by Anonymous

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

2007-12-22 06:47:57 · 5 answers · asked by Anonymous

Friction causes some mechanical energy to change to thermal energy.

2007-12-22 06:33:09 · 4 answers · asked by Anonymous

2007-12-22 06:03:40 · 6 answers · asked by Anonymous

there is a program about 4 to 5 mb's. its about physics and is free. you can do physics stuff on it like have a see saw and put weights and pulleys etc on it and see how it reacts physically. i can't remember the name of the program. if anyone knows please tell me.

2007-12-22 06:03:03 · 3 answers · asked by Anonymous

An anti-matter atom consists of:
-Positrons-electrons that carry a positive charge
-Anti-protons-protons that carry a negative charge

2007-12-22 05:30:27 · 8 answers · asked by Atam 1

2007-12-22 05:24:53 · 4 answers · asked by Narok 1

I work in a gift type shop and we have some fancy tea light holders that are glass - the red ones are nearly £30 each but the other colours, blue, green and sand are only £10. Why is red glass so much more expensive to make??

2007-12-22 04:16:27 · 9 answers · asked by MakeUpI 2

2007-12-22 03:59:19 · 9 answers · asked by Anonymous

Just received a Christmas gift from a friend in Washington state. Box intact, paper wrap intact. Inside, wrapped in plastic then in wrapping paper were some kitchen towels that were so sopping they got water on the sofa and I had to wring them out and put them in the dryer! Other packages in the same box were totally dry. I called my friend - it was not a joke and she is as mystified as we are. My husband thinks someting to do with condensation - my daughter thinks she packed ice in inadvertently but I think it might be physics of some other kind. Does anyone have any idea?

2007-12-22 03:34:24 · 4 answers · asked by Debby M 2

a circular body initially at rest is moving on an inclined body inclined at an angle '0' (teta).
it follows a motion such that dv=3dt (differentiation) at time 3s.
given coefficient of friction is U. then find the radius and the angular velocity for the body.also find the number of rotations it takes from 3s to 4s.

Feel shame if u cant solve this b'coz this question is created by a 9th grade student for 11 and 12 class students





if u give up saying are shameless,then i will say the answer

2007-12-22 03:27:25 · 4 answers · asked by srinu710 4

2007-12-22 02:49:16 · 7 answers · asked by Rodney L 1

2007-12-22 02:44:07 · 3 answers · asked by Anonymous

If you were in an elevator, 400ft high, and the cable snapped, if you jumped just before the ground collision, would you be ok? (Assuming the ceiling is 20ft so you have no chance of hitting head)?

The way I think of it is that you transfer your force to the elevator.

2007-12-22 02:33:12 · 4 answers · asked by Anonymous

2007-12-22 02:11:34 · 7 answers · asked by Jose Allan B 1

2007-12-22 01:47:39 · 8 answers · asked by rekha c 3

For example; A 200 lb man standing on the ground, how much would he weigh traveling on an airplane at 30,000 ft? At what point would he start to weigh less?

2007-12-22 01:11:40 · 6 answers · asked by Paul G 1

is it produce any harmful radiations? in any time, like voltage fluctuations.. etc.?is it banned in some countries?is the daily use not recomended?

2007-12-22 00:40:09 · 4 answers · asked by Jayan P N 1