Physics - March 2007

you have been given the task of moving a huge box of baseball to a shelf that is 1meter above the floor ther are three ramps available for you to use they all have height of 1meter however the first one is 1meter long the second is 2meter and the third is 3meter long which ramp will make you task easiest?why

2007-03-20 02:42:59 · 4 answers · asked by sunny p 1

If such material excists, at what temp. does the UV start to emit

2007-03-20 02:32:44 · 3 answers · asked by Anonymous

explain your answer please

2007-03-20 02:32:29 · 3 answers · asked by sunny p 1

i heard that if electricity is supplied at a high frequency say for example 100hz instead of 50hz then it would not be able to penetrate the skin and would therefore be much safer. is this true and if so can you explain why.

2007-03-20 02:16:07 · 4 answers · asked by supremecritic 4

2007-03-20 02:05:43 · 9 answers · asked by satya k 2

1s22s22p63s13p1

1s22s22p63s23p44s1

1s22s22p63s23p64s23d44p1

2007-03-20 02:03:48 · 2 answers · asked by pinay804 2

2007-03-20 02:02:41 · 5 answers · asked by Anonymous

2007-03-20 02:01:26 · 2 answers · asked by Chocolate Strawberries. 4

2007-03-20 01:48:28 · 4 answers · asked by mcm 1

2007-03-20 01:47:23 · 4 answers · asked by mac_addict 3

so that there was absolutely no way any air or gas could enter or leave the balloon, would the balloon stay afloat or would it still eventually fall?

2007-03-20 01:47:07 · 4 answers · asked by psych0s3m4tic 2

Einstein had proved the relativity theory. So all can be possible?

2007-03-20 01:45:35 · 11 answers · asked by Curiosa 3

2007-03-20 01:38:38 · 9 answers · asked by Anonymous

2007-03-20 01:37:54 · 4 answers · asked by Larry H 1

I just read an article where mathematicians figured out E8. I've read it over 2x and I'm still not sure what it is or what the future implications could mean.

I take it that it has something to do with string theory, which I'm familiar with.

Can someone explain it in simple terms (if that's possible)?

2007-03-20 01:37:23 · 2 answers · asked by ? 3

2007-03-20 00:38:23 · 3 answers · asked by gc sharma 1

E=MC2 means the energy is equal to the mass x the speed of light 2.... now what does THAT actually mean?

2007-03-20 00:31:31 · 11 answers · asked by Anonymous

2007-03-20 00:02:47 · 5 answers · asked by Chocolate Strawberries. 4

2007-03-19 23:36:50 · 6 answers · asked by Anonymous

A stunt pilot of mass 55.0 kg who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane.

QUESTION 1:
If the plane's speed at the lowest point of the circle is 95.8 m/s , what is the minimum radius of the circle for the acceleration at this point not to exceed 4.00g ?
Take the free fall acceleration to be g= 9.80 m/s^2.

ANSWER IN METERS

QUESTION 2:
What is the apparent weight of the pilot at the lowest point of the pullout in this case?
Take the free fall acceleration to be g= 9.80 m/s^2 .

ANSWER IN NEWTONS

2007-03-19 23:36:24 · 1 answers · asked by Mr_ 1

Is it correct to say that the human eye can only see in straight lines?

2007-03-19 22:54:07 · 2 answers · asked by Anonymous

2007-03-19 22:43:01 · 1 answers · asked by Lai Yu Zeng 4

Also, an element emiting a beta particle must develop positive charge. This doesnt happen too...

2007-03-19 22:25:45 · 6 answers · asked by Aniruddh B 1

i can't remember where i heard it from. i always figured that my cell phone works because it picks up a signal from tmobile.

2007-03-19 22:02:08 · 7 answers · asked by Violetta 1

what evidence can u give that hte speed of sound in air does not depend significantly on frequency? at which position will the highest frequency be heard from a whistle blown from a person?

2007-03-19 21:53:07 · 1 answers · asked by clock 2

kids sometimes play w/ a homemade "telephone" by attaching a string to the bottoms of two paper cups. When the string is stretched and a child speaks into one of hte cups, the sound can be heard at the other cup. explain how is the sound wave traveling from one cup to the other cup.

2007-03-19 21:34:11 · 5 answers · asked by clock 2

i keep getting an intensity level of -1 when the answer is 1. how do u get 1?

2007-03-19 21:06:05 · 1 answers · asked by clock 2

the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

2007-03-19 21:03:28 · 4 answers · asked by mothsandbutterflies 1

What is an advantage of a pinhole camera?
A. you take a picture very quickly
B. you do not need film
C. objects both close and far away are in focus
D. It can act as a macro lens for looking at very nearby objects
E. It operates well in low light situations

2007-03-19 20:49:44 · 5 answers · asked by Unexpected 1

Whenever I go close to the radio, the signal gets alot stronger. Is there a article somewhere that explains this. I dont mean some mumbo-jumbo new age website that says the human body has an electrical aura and that kinda crap.
I want cold hard facts if and why its possible.

2007-03-19 20:37:49 · 4 answers · asked by armyofda12monkeys 2