Physics - March 2007

help! any good websites to explain this stuff?

2007-03-12 05:52:41 · 2 answers · asked by just me 1

water flows over a section of niagra falls at a rate of 2.1 x 10^6 kg/s and falls 53 m. the acceleration of gravity is 9.8 m/s^2. what is the power wasted by the waterfall ? answer in units of work ?

2007-03-12 05:40:19 · 5 answers · asked by Anonymous

2007-03-12 05:29:20 · 2 answers · asked by m 2

2007-03-12 05:20:26 · 22 answers · asked by victor 1

When thinking about the molecules and how there will be more molecules per unit area in both higher concentration and higher pressure substances?

2007-03-12 05:18:31 · 4 answers · asked by Raining on a Queen 1

its for my science project and i need to find out if changing the colourof solar panels will affect the ammount of energy, and if a colour absorbs more heat than black. navy blue won, beut are solar panels really coloured?

2007-03-12 05:11:47 · 3 answers · asked by Anonymous

homework stuff

P.S thanks for anwsering

2007-03-12 05:11:02 · 2 answers · asked by Emma 1

Ones of the great speculations in the cientifica research: the extremely great one, extremely the small e the extremely complex one. The study of the Big Bang and the holes black it involves the three. How much to the Tarcísio Brito, everything summarizes in the Great Atom “Universe”, finite in its dimension and the infinite in its time. Everything in the Mechanics of the Diagram of this Great Atom, and nothing beyond the same. E you! It agrees or it disagrees?

2007-03-12 05:10:47 · 1 answers · asked by britotarcisio 6

In school , I knew that the force acts towards centre and hence the acc^n. But now in uni , you found the accceleration using the square root of the squares of a(t) and a(n)-tangent(t) and normal(n) rspectively. Why is this ?

2007-03-12 04:59:57 · 3 answers · asked by jubair07 1

a force of 11.16 N pushes and pulls two blocks. the vertical contact surfaces between the two blocks are frictionless. the contact between the blocks and the horizontal surface has a coefficient of friction of .22 the acceleration of gravity is 9.8 m/s^2.

2007-03-12 04:53:13 · 1 answers · asked by Anonymous

2007-03-12 04:36:10 · 5 answers · asked by ezmoney83 1

If altitude is just few meters then the answer is T = √2h/g.
But what if an object is released on very high altitude, h >> R_earth?

2007-03-12 04:35:11 · 6 answers · asked by Alexander 6

and are solar pannels coloured, or clear?

2007-03-12 04:33:19 · 7 answers · asked by Anonymous

if 50g of ice were put into 200g of water at 75degrees celsius, what is the resulting temperature?

2007-03-12 04:27:28 · 1 answers · asked by kuwee 2

magnitude 30 N. In the above problem what is the smallest horizontal force that needs to be applied to make the block move up the plane?

2007-03-12 04:27:04 · 2 answers · asked by Anonymous

The resulting horizontal acceleration of the box has magnitude

2007-03-12 04:22:08 · 2 answers · asked by l_walker2005 1

down the bank. In the above problem suppose a car of the same mass speeds at 35 m/s on the curved bank. How large must the coefficient of static friction be to keep the car on the road?

2007-03-12 04:21:27 · 1 answers · asked by l_walker2005 1

vertical. If the motorcyclist negotiates the curve without sliding, her speed is

2007-03-12 04:20:31 · 1 answers · asked by l_walker2005 1

acceleration of the car is

2007-03-12 04:19:40 · 1 answers · asked by l_walker2005 1

kinetic friction between the object and the surface is

2007-03-12 04:19:00 · 2 answers · asked by l_walker2005 1

Is cm Hg equivelant to Pressure?

2007-03-12 04:17:28 · 4 answers · asked by Chocolate Strawberries. 4

how much heat is needed to change once gram of ice at 0 degrees celsius to steam at 100 degrees celsius?

2007-03-12 04:13:13 · 1 answers · asked by kuwee 2

If a bobsled with driver (combined mass =300kg) starts at the top of the track with an initial velocity of 2m/s and at the end of the run, the sled is speeding along at 30m/s. Assume the track’s friction consumes 10 percent of the total gravitational energy, what is the total vertical drop of the track?

2007-03-12 04:13:03 · 2 answers · asked by ellyvstheworld 1

2007-03-12 04:10:48 · 3 answers · asked by stu e 1

Where as, at standard atmospheric pressure, the temperature of water "cannot" be raised above 100C due to the fact that the vapor pressure overcomes atmospheric pressure and the water begins to boil. Is there a similar phenomena for frozen water at some temperature below freezing? Energy equation for sublimation, perhaps? Thanks!

2007-03-12 04:07:19 · 4 answers · asked by Dakota Joe 1

How do you say PHYSICS in spanish?

2007-03-12 04:01:28 · 5 answers · asked by Dietz J 1

2007-03-12 03:56:19 · 2 answers · asked by kuwee 2

the magnitude of the velocity with which the rock hits the ground below is

2007-03-12 03:55:33 · 1 answers · asked by kina040386 1

2007-03-12 03:54:37 · 5 answers · asked by kina040386 1

block 10 s after the force was first applied is

2007-03-12 03:50:30 · 1 answers · asked by kina040386 1