Physics - March 2007

2007-03-04 22:37:40 · 8 answers · asked by mansab 1

2007-03-04 22:00:28 · 3 answers · asked by reginal c 1

2007-03-04 20:55:30 · 7 answers · asked by melbournewooferblue 4

2007-03-04 20:51:36 · 5 answers · asked by melbournewooferblue 4

2007-03-04 20:32:02 · 6 answers · asked by Anonymous

electronics & chemistry

2007-03-04 20:29:03 · 2 answers · asked by Anonymous

If two equal mass bodies are dropped on a scale from the same height, but one compresses while the other is rigid, will the scale indicate the same reading?
For the sake of numbers, if it matters, let the mass equal 10kg, the height of the drop is 5 meters and the object is 1 meter long.
What are the units (newtons, joules, watts?)

2007-03-04 19:48:54 · 1 answers · asked by Matthew P 4

how do i set up a double slit experiment wiht a laser pointer?

2007-03-04 19:38:34 · 4 answers · asked by hot_gal1991 1

2007-03-04 18:59:58 · 2 answers · asked by gemini 1

I am wondering where technicians get all the schematics they need to work on many different models, for example. They surely don't contact each company and purchase each one seperately. I think there are catalogs of schematics they purchace. If anyone knows where I can buy a catalog of schematics post the link, and thanks.

2007-03-04 18:47:54 · 3 answers · asked by Anonymous

so the idea is to move so fast that you travel before you leave?
in that case I believe you must travel faster than the speed of time. if this is true, which I think it is, then light is right around the speed of time. light can be slowed down by water and other translucent matter, so therefore, light has nothing to do with it, it is simply a gauge tellnig us the speed of time. because if the speed of time is dependant on light, than if light was slowed by water, than time would have to slow in the water.
and if the speed of time is dependant on light, than what if all the lgiht in the universe where sudenly shut off? would time stop?
so I think light can only be used as a general gauge for the speed of time.

2007-03-04 17:45:47 · 4 answers · asked by James 1

2007-03-04 17:41:32 · 10 answers · asked by Anonymous

why does this method of checking not give definite confirmation that an equation is correct?

2007-03-04 16:44:11 · 3 answers · asked by Anonymous

a projectile of mass 0.750 kg is shot straight up with an initial velocity of 18.0 m/s. if the projectile rises to a maximum height of only 11.8 m, determine the magnitude of the average force due to air resistance.
a. 8.3 N
b. 2.9 N
c. 11 N
d. 7.4 N
e. 1.5 N

2007-03-04 16:20:34 · 2 answers · asked by tico 1

2007-03-04 16:18:21 · 7 answers · asked by Anonymous

2007-03-04 16:16:42 · 3 answers · asked by Connie L 1

a 47.0 g golf ball is driven from the tree with an initial speed of 52.0 m/s and rises to a height of 24.6 m. neglecting air resistance, what is it's speed when it is 8.0 m below its highest point?
a. 34.3 m/s
b. 52.0 m/s
c. 69.7 m/s
d. 48.8 m/s
e. 54.9 m/s

2007-03-04 16:16:30 · 2 answers · asked by tico 1

2007-03-04 16:12:42 · 7 answers · asked by Connie L 1

when an 81 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2 X 10^3. by how much does the potential energy of an 18 kg child increase when the child climbs to the second floor?
a. 638 N
b. 478 N
c. 319 N
d. 532 N
e. 444 N

2007-03-04 16:09:41 · 5 answers · asked by tico 1

balloon. what is the magnitude of the charge on the balloon?

2007-03-04 16:09:35 · 3 answers · asked by Connie L 1

One of James Bond's adversaries is standing on a frozen lake; there is no friction between his feet and the ice. He throws his steel-lined hat with a velocity of v at an angle theta above the horizontal, hoping to hit James.

If his mass is m1 and that of his hat is m2, what is the magnitude of his horizontal recoil velocity?

Thanks for the help!

2007-03-04 16:06:30 · 3 answers · asked by Amanda 2

2007-03-04 15:59:16 · 3 answers · asked by Connie L 1

We have a science project, an educational video, in physics. My topic is about light. Do you have any ideas or suggestions on how i can present and explain light and its concepts as a fun topic?

2007-03-04 15:55:42 · 4 answers · asked by yuischa 2

The charges +2.0uC, +3.0uc, and +4.0 uC are placed at points A, B and C of an equlateral triangle with each side of .20 m. Determine the force on the charge +4.0 uC placed at point C?

2007-03-04 15:47:51 · 1 answers · asked by NRedy 1

In relativity, If objects were to approach the speed of light, they would increase in mass, and slow down time for that object relative to those moving much slower...

IF: (A) increase in speed = (B) increase in mass
(A) increase in speed = (C) slowing of relative time

THEN : due to transitive property of mathematics, is (B) = (C)
possible? It corresponds to gravity being caused by
fourth dimension interference (ball on blanket example)
and Einstein's beliefs of time being the fourth dimension.

2007-03-04 15:45:33 · 3 answers · asked by psilocyphener 3

I have to do an outline first and then a 5-7 page essay. I need strong points, what should they be?

2007-03-04 15:45:29 · 1 answers · asked by glamour 1

can u give me a link or meaning of it

2007-03-04 15:12:21 · 3 answers · asked by dragonboyz943 1

Hi again - I'm sorry I didn't understand the answer that someone posted half an hour ago. From the answer I am getting nowherenear 6.492?

Hi can anyone help me out with physics homework?

I need to find out the resistance of 0.31 mm diameter constantan wire. Constantan wire has a resistivity of 49 x 10-8 and the length is 1000mm.

The second question is as above but with a length of 500mm.

I have the equation of r = pL/A but I keep getting different answers not sure what I am doing?

Is it 49 x 1(for a metre) / pi x (0.31/2) squared?
Can you help me out? I dont know what I am doing!

Thank you

J

2007-03-04 15:07:37 · 2 answers · asked by shetajan 1

The brothers of a fraternity build a platform in their basement, supported at all four corners by vertical springs. A brother wearing a helmet stands in middle of the platform; his weight compresses springs by a distance 0.200 . Then four of his brothers, pushing down at corners of the platform, compress springs another distance 0.510 until top of brother's helmet is distance 0.920 below the basement ceiling. They then simultaneously release the platform. You can ignore masses of the springs and platform.

A:When the dust clears, the fraternity asks you to calculate their brother's speed just before his helmet hit the flimsy ceiling.

B:Without the ceiling, how high would he have gone?

C:In discussing their probation, the dean of students suggests that the next time they try this, they do it outdoors on another planet. Would the answer to part (B) be the same if this stunt were performed on a planet with a different value of g? Assume that the fraternity brothers push the platform down 0.510 as before.

2007-03-04 14:47:59 · 1 answers · asked by Superman 1

2007-03-04 14:44:39 · 4 answers · asked by Anonymous