Physics - March 2007

I mean if you go using specific heat capacity,

specific heat capacity * mass = energy/ change in temp

If

SPH * 1/2 y = energy/ T- X

then it will be different from: SPH * y = energy/ T-X

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yet, look at this question:

The temperature of 100g of water is 25 degree celsius. When you divide the water into 5 parts, each part is 5 degree celsius.

Any idiot can tell it's wrong. My reasoning is that the average kinetic energy is equal throughout.

My teacher's reasoning is that temperature has no relation to mass.

2007-03-22 04:05:14 · 3 answers · asked by Anonymous

A uniform magnetic field of magnitude 0.200 T is directed along the positive x axis. A positron moving at 5.20 106 m/s enters the field along a direction that makes an angle of 85.0° with the x axis. The motion of the particle is expected to be a helix.

2007-03-22 03:54:02 · 3 answers · asked by Anonymous

carryin cocunut shells?

2007-03-22 03:30:06 · 3 answers · asked by lozzyp 1

. Scientists are told to doubt everything and not believe anything that is not provable. Is this a strength or weakness of science?

2007-03-22 03:14:27 · 9 answers · asked by hafsa a 1

if there were a perfect spherical ball with a mirror interior and there were a light source inside. then that light source went off the light should keep bouncing off the mirroir forever right?

2007-03-22 03:12:03 · 5 answers · asked by It's Ray 2

. Suppose we measure time by using hour glasses filled with sand. Discuss the various errors that would exist if we tried to use this as a world standard for time. Give a rough estimate for the error over a 24 hour period.

2007-03-22 03:08:32 · 1 answers · asked by hafsa a 1

Vector a has a magnitude of 5.2 and is directed east. Vector b has a magnitude of 4.3 units and is directed 35o west of north. By constructing vector diagrams, find the magnitudes and direction of (a) a + b, and (b) a – b

2007-03-22 03:03:07 · 2 answers · asked by hafsa a 1

according to the uncertainty principal is it possible to have a vacuum?
Mass is energy, and you can't create an area with a definite amount of energy (E = 0) for a long period of time.

2007-03-22 02:49:19 · 7 answers · asked by sh 1

2007-03-22 02:40:51 · 1 answers · asked by abdulsalam t 1

ok so I have 10 kg of wood and 0.6 kg of ahes remain after it gets burned. What happened to the number of atoms before and after and the arrangement of the atoms. Thank you guys so much!

2007-03-22 02:31:42 · 4 answers · asked by ♥ hey! 2

electron can pass,from one atom to another through the orbits.i want to know is it any gap between one atom and another atom.can u tell me good links to know about atoms and motion of electrons.

2007-03-22 02:14:10 · 4 answers · asked by asook k 1

I'm having a hard time with this problem (and I want to finally go to sleep plz)

Two cars, both of mass m, collide and stick together. Prior to the collision, one car had been traveling north at speed 2v, while the second was traveling at speed v at an angle phi south of east (as indicated in the figure). After the collision, the two-car system travels at speed v_final at an angle theta east of north.

Please see the graph http://session.masteringphysics.com/problemAsset/1007938/22/6318.jpg

Thank you

2007-03-22 02:11:36 · 3 answers · asked by Sergio__ 7

and if we do what is the scientific term for soul? ive heard its emf fields or something! anyone know?

2007-03-22 02:00:17 · 4 answers · asked by Tony M 1

how do physics help me in my area of expertise, accounting??

2007-03-22 01:41:23 · 4 answers · asked by mia 2

all abt physics

2007-03-22 01:27:43 · 3 answers · asked by Anonymous

you just got done mowing the lawn on a hot humid day.you decide to have glass of soda. you open a can of your faviorite soda and pour it into a glass containing icecubes.you and your ice cold soda head out to the porch for somewell earned relaxation. then the phone rings, so you runt to get it. by the time you get back, your soda has gone flat and the of your glass is covered with droplets of water. as you sit down, you start thinking about whats happening in terms of the atoms.

explain the following in terms of the atoms
1.the carbination in the soda
2.the glass
3.the ice in your glass of soda
4.pouring the soda into the glass of ice
5.the hot humid day
6.the water droplets forming on the side of the glass

2007-03-22 01:06:55 · 1 answers · asked by Anonymous

2007-03-22 00:35:20 · 8 answers · asked by SAM 1

What causes these noises?

2007-03-22 00:25:06 · 3 answers · asked by East Ender 2

If you do the same with a rubber band, the pitch stays the same or becomes lower rather than higher? Why?

2007-03-22 00:11:50 · 16 answers · asked by East Ender 2

2007-03-22 00:06:36 · 4 answers · asked by Yoko K 1

2007-03-21 23:52:40 · 11 answers · asked by Anonymous

2007-03-21 23:51:39 · 11 answers · asked by Anonymous

2007-03-21 23:36:59 · 6 answers · asked by Anonymous

I have a tecaher who is supposed to be retired and has lost interest in his class. okay...A boy riding a bike leans into the corner, using a suitable diagram explain why he does this.
I know theres gravity down and the oposing force, then the horizontal component which supplies centripetal acceleration, and the aciuon and reaction of the road but im still stuck as to the purpose of leaning because it seems that all the forces are cancelled out. Please help

2007-03-21 23:28:36 · 3 answers · asked by bean_girl_13 1

The freshness of fish can be measured by placing fish between the plates of a capacitor and measuring the capacitance. How does this work?

2007-03-21 23:27:08 · 2 answers · asked by wtfitsnguyen 2

the type of wave drawn by the machine have to be transverse waves..I want to build this machine before 30th of march,it's for my physics project work...

2007-03-21 23:15:28 · 1 answers · asked by Anonymous

2007-03-21 23:14:03 · 2 answers · asked by Anonymous

I am sure I improperly phrased the question but o well.

This is a qustion about time and space. Can time become denser? If so would the speed of light not be affected?

2007-03-21 22:46:13 · 5 answers · asked by Anonymous

A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45°. With what speed was it thrown?
14 m/s
20 m/s
28 m/s
32 m/s
40 m/s

can you show the working out thx

2007-03-21 22:39:44 · 3 answers · asked by Wilson J 4

A "hard" science fiction book (that is, one that makes scientific speculations that are as plausible as possible) states as fact that the total volume of living things contained in fissures and cracks in deep rock is larger than the biomass on the surface of the earth. Could this possibly be true? biomass on the surface of the earth.

2007-03-21 22:24:15 · 5 answers · asked by Anonymous