Physics - January 2007

How do I turn the equation, m1v0+m2v0=m1v1f+m2v2f into the equation v1f= [(m1-m2)/(m1+m2)]v0.

My Physics teacher said it's possible and that it involves "messy" algebra. This is a problem my teacher wouldn't help me with and I've been trying for a couple hours and am stuck. Can you please show me step by step.

2007-01-08 10:39:24 · 5 answers · asked by bluevolleyball12 1

Two bimetallic strips have identical shapes. One is made from aluminum and steel, while the other is made from copper and silver. Which is likely to bend more for a given change in temperature? Justify your asnwer please
explain the best you can, thanks

2007-01-08 10:25:56 · 1 answers · asked by bhangraking777 1

Which is likely to bend more for a given change in temperature?

please explain best as possible

Two bimetallic strips have identical shapes one is made from aluminum and steel, while the other is made from copper and silver. Which is likely to bend more for a given chance in temperature? Justify your answer.

Thanks

2007-01-08 10:14:23 · 1 answers · asked by bhangraking777 1

Considering how much we have advanced in the past 100 years, what do you think will happen in 100?


Any ideas???

2007-01-08 09:51:45 · 3 answers · asked by Anonymous

I mean the hole starting just anywhere on the surface and ending exactly on the opposite side of the Earth planet. See what I mean? I know it's impossible but at least in theory how will he fall? What if the hole wouldn't cross the center of the earth but only will be made somewhere on the edge?

2007-01-08 09:44:04 · 5 answers · asked by Draggydragon 1

A metal sphere has a charge of +7.0 µC. What is the net charge after 8.00 1013 electrons have been placed on it.

2007-01-08 09:41:45 · 3 answers · asked by larkinfan11 3

A 120 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.0 m above the ground. The crane that is doing the lifting produces a steady power of 400 W. How much time does it take to lift the piano?

2007-01-08 09:33:01 · 3 answers · asked by Lucy 1

2007-01-08 09:05:53 · 6 answers · asked by guzzlegob 4

according to sir stephen hawking's statement "If you jump into a black hole, your mass energy will be returned to our universe, but in a mangled form, which contains information about what you were like, but in an unrecognizable state,"

can this form possibly be a negative of any object that enters into a black hole ?
can black hole be said to be a form of negative gravitation ?

can a sphere be exactly negaive to the core or completely negative in every aspect ? that is to say with all the measure and the volume with the physical state to be negative too. . . .

2007-01-08 08:40:55 · 4 answers · asked by Anonymous

2007-01-08 08:25:36 · 4 answers · asked by Cheese G 1

In class we did a demonstration where two balls were launched at the same time. The balls had different velocities in the horizontal direction yet hit the floor at the same time. Explain this result. (In other words, why didn't the ball with the greater horizontal velocity hit later?)

2007-01-08 08:14:36 · 6 answers · asked by Anonymous

Three balls collide and they all stop. The first ball has a mass of 8.00 kg and was traveling 4.00 m/s @ 40.0 degrees south of east (320 degrees). The second ball has a mass of 6.00 kg and was traveling 4.00 m/s @ 30.0 degrees north of east (30.0 degrees). The third ball has a mass of 7.00 kg. What was the velocity of the third ball?

2007-01-08 07:58:41 · 1 answers · asked by Adam_ant 1

When building a tiled, parabolic surface, is there an equation used to determine the angles of the mirrors?

2007-01-08 07:54:17 · 2 answers · asked by - - 1

..please write a paragraph about this?

How a skier can manage to ski with short and T-shirt on using the terms: conduction, convection, and radiation..

please i will give 10 points for the best answer!!!!!

2007-01-08 07:45:15 · 4 answers · asked by hey 3

Perhaps the photon loses it's speed?

2007-01-08 07:36:31 · 4 answers · asked by eventhorizon 2

What is the Law of Balancing for balancing a meter stick and then putting two unequal masses on each side and then making sure the two sides equal out? How is it determined?

2007-01-08 07:33:39 · 2 answers · asked by beautyqueenjustine 3

1.warm and sinking
2. warm and rising
3. cold and rising
4. cold and sinking

2007-01-08 07:18:40 · 4 answers · asked by Anonymous

2007-01-08 07:07:37 · 6 answers · asked by Anonymous

ahaha i don't know what place to start looking for answer for this question, the lesson is vector addition:

Explore on the fact that one of the application of vectors is the addition of forces found by examining the action of various muscles of the body. Cite evidences to support the answer.


F.Y.I : I will be choosing the best answer ASAP

2007-01-08 07:03:57 · 4 answers · asked by Samlovesjesea 1

2007-01-08 06:19:56 · 3 answers · asked by latif_1950 3

Since the light reflecting off me must travel first off my skin, then to the mirror, then back again.... that's a total of 6ft.... but i'm only 3ft away from the mirror...
Does a mirror duplicate distance?

2007-01-08 06:19:25 · 4 answers · asked by andrew5544 4

2007-01-08 05:44:49 · 12 answers · asked by mairead o 1

A Tachyon is a hypothetical particle that travels faster than the speed of light.

2007-01-08 05:41:42 · 4 answers · asked by Me! 2

Please help me out and do something

2007-01-08 05:23:33 · 1 answers · asked by Anonymous

I had to get a metre bridge circuit diagram .. Please help me out>.........

2007-01-08 05:14:23 · 1 answers · asked by Anonymous

2007-01-08 05:02:50 · 4 answers · asked by Liz Roswell 1

The philosophy books on this site claim that all science all mathematics all philosophy in fact all products of human thinking and thought collapes into meaninglesness. Logic itself collapses itself into meaninglessness. Logic is not an epistemic condition for the discovery of truth as it reduces everythhing including itelf to self-contradiction or meaninglessness. Nihlism is infact meaningless even meaninglessness ends in meannglessness We are left with nothing but chaos and uncertainty . By the very tools we use to discover truth ie logic these tool lead to their own collapse into meaningles and every other prodiuct of human thinking All categotries all ethics all clasificationary systems in fact every thing collapse into meaninglessness. in terms of the very tools ie logic we hope to give meaning with . How maths and sxcience work becomes a mystery

http://gamahucherpress.yellowgum.com/gamahucher_press_catalogue.htm

2007-01-08 05:00:51 · 5 answers · asked by ann 1

A site which will help for my project ...

2007-01-08 04:54:17 · 1 answers · asked by Anonymous

We know that everything revolves, right? We know there is a deeper meaning behind these revolutions. But what do we really know about spin? Why spin? WHat does spin cause? How does spin affect our being? And since we know Spin, how come we can't figure out more about Spin?

2007-01-08 04:53:10 · 5 answers · asked by Vincent J 1

If the farther you move a quark from its neighbors, the stronger the attraction becomes, what force accounts for this? And why is the interaction between quarks looser within protons than in neutrons and electrons? How is this all resolved when it is applied to anti-matter? Does quantum chromodynamics fully explain why there are no isolated observable individual quarks?

2007-01-08 04:46:24 · 3 answers · asked by wants_connection 1