goodyhi11

try to observe the electron with a photo whose position can be well known. Then the photon's associated wave has high frequency and short wavelength and therefore (since E=hf), the photon has high energy.

greeting people, can you explain how airplanes works?

usually i love to do those proof problems, i guess it's just geometry finals makes a bit scary, and i am under a lot of the pressure.

Problem of the week:

I have a marble that is immersed in water. Volume of the marble is 10cm^3, its density is 1g/cm^3, and of course the acceleration due to gravity is 9.8m/s^2.

1)Find the Net force acting on the marble?

when we look at a geometry problems, most of the time it asks you to seek a way to proof certain figure. Recently I'm pretty scared when I ran into these problems. Can anyone help me to straight my thought, and help me how to think logically when I try to prove a figure?

Greeting people,

Problems of the day:

For what nonzero value of r, the radius, is the circumference of a circle numerically equal to its area?

Thanks!

A parallelogram doesn't have a fixed angle, nor are all the angles necessarily the same, so it can't be the answer.

 

The sum of the angles is 180. If the exterior is half the interior, then it's 60 exterior and 120 interior. Hexagon.

 

Are you sure you copied the question correctly? If you reverse the relationship then you get 60 degrees for the interior angle, which would be an equilateral triangle.

You are right, it is a hexagon. Can you please expain your steps again?

yes "sayonara3", you are right, but how did you figure it out though?

hey that's what I thought too, but that's not the answer, the answer is equlateral, and I have no clue how the answer is that.

I have a geometry problem that need to be solved. Any one volunteer?

Problems: The measure of each exterior angle of an equianglar polygon is half the measure of each interior angle of the polygon. What is the name of the polygon?

Thanks

it was a homework question

thank you ecoli for your answer!

i have a problem regarding physics.

A rocket's mass is reduced to 1/3 its original mass. If Fnet remains constant, by what factor will its acceleration change?

Hint: The formula is a=Fnet/m

Thanks

from my understanding is that when the light travels at a constant speed, when it come near by a big massive object, the light will be going toward the massive object which cause the light to curve.

i'm posting this reply may not coonect with biology in any way, but this is my experience on how to get the work down. I strongly agree with 5614 that as soon as you turn on the computer you get distracted, and you want to go on to all these web sites that excites you the most. My finals is next week, and I have to be 120% be ready for that, so this might be the last several replies I going to post in next few days. Because i am going to shut down my computer starting tomorrow. I will put myself into a situation where nothign can really bother me, to able to create a environment where i can truely concentrate on my study. i have no option and i believe my self that i will get a 100% on my math finals, and a high A in my phyics and english calss. pay attention i said i will do it but i didn't say i might do it. there is a key difference, and that's something in which i learned from a friend of my who is a teacher. i have and must believe myself that i can do this, and that is very important for an individual. hope you do well with the best of the luck.

g

I have a question on Einstein's theory of special ralativity. They say that if two baby brother borned at the same day, but when one of them been put on a spaceship that travels at near the speed of light to another star. After earth's time of 10 years, he returns to earth, but his own borther who satyed on earth is 10 years oler than him. My questions is the brother stayed on earth growing for ten years, then wouldn't the brother in the sapceship also grows for ten years due to the metabolism?

If this is not too much to read, can anyone please give a answer.

Classical age of physics is the period before 1900, which Newton took the lead. But after 1900 which is the modern physics Einstein took the lead.

Newtwon=Einstein

I think you are the rebirth of Paul, he is the person who had enormous influence on Christianity's development. Paul was a Jew who had never met Jesus and at first was an enemy of Christianity. While traveling to Damascus in Syria, he reportedly had a vision of Christ. He spent the rest of his life spreading and interpreting Christ's teachings. Who knows.

me too

I left the computer on for most of the time. The reason I turn it off is it keeps me away from it so that I don't have to waste too much time on the internet.

wow, this problem seem to have some problem. "x^" cannot be followed by "[a^(a+1)]" I'm surprised, not even my super powerful mathematica 5.1 seems to slove it.

i have this unsolved geomentry problem. It ask you to identify a figure we use in geometry " a triangle in which there is a hypotenuse". ??? please help.

under any circumstance, we still think that gravity is the thing that puts everything in order. the planets are in a specific orbit. Gravity travels at the speed of light ralative to what. Gravity travels at the speed of light ralative to you. This is a confusing point of view which confuses every body. NO, GRAVITY DOES NOT TRAVEL AT THE SPEED OF LIGHT.