Physics - March 2007

I'm looking for them in Lamens terms, naturally. I want to know because I have a big Physics and Chem. test to take, and I have no IDEA what they are and there are all sorts of questions about it.

2007-03-08 14:31:01 · 6 answers · asked by Samantha 2

2007-03-08 14:23:02 · 5 answers · asked by Kevin D 1

we are supposed to be naming the CHEMICAL COMPOUNDS. BUT.... some arent on the periodic table. The ones that are mixed. I need that list.

for example here are a few problems i DO know:
1) NaNO3 = Sodium Nitrogen Oxide
(the three is supposed to be small at the bottom right)

2) Ca(OH)2 = Calcium Hydroxide
(the 2 is supposed to be small at the bottom right outside of the parenthesis)

NOW HERE IS ONE I DONT KNOW :

1) MgSO4 = ????
( the 4 is supposed to be small at bottom right)\


♥ please help!!!!!!!!♥

2007-03-08 14:15:21 · 3 answers · asked by Anonymous

I need to know what happens to the reading on the scale just after i start rising and just before I stop rising. I cannot find our scale so I cannot do this.

2007-03-08 13:40:56 · 4 answers · asked by woowoowawa 1

An elastic conducting material is stretched into a circular loop of 11.0 cm radius. It is placed with its plane perpendicular to a uniform 0.700 T magnetic field. When released, the radius of the loop starts to shrink at an instantaneous rate of 76.0 cm/s. What emf is induced in the loop at that instant?

2007-03-08 13:39:06 · 1 answers · asked by bdizzle329 1

2007-03-08 13:37:02 · 7 answers · asked by Lizzie 5

a. it has no atmosphere
b. its escape speed is too low
c. its surface is too cold
d. its surface is too hot

2007-03-08 13:23:49 · 12 answers · asked by Anonymous

a. Mars
b. Jupiter
c. Saturn
d. Uranus

2007-03-08 13:22:08 · 3 answers · asked by Anonymous

a. Mercury
b. Jupiter
c. Saturn
d. Pluto

2007-03-08 13:20:26 · 9 answers · asked by Anonymous

A fighter climbs with a speed of 120 m/s at an angle of 50degrees, to an altitude of 850m. At which point he drops a bomb directed at a bunker on the ground. If the bomb is to strike the bunker
a.What is the ground distance from the plane to the bunker?
b.How long do the ground troops have to evacuate the bunker?
c.What is the impact velocity of the bomb?

2007-03-08 13:16:35 · 4 answers · asked by allyn_03 2

From the illustration below determine the normal force the floor projects to the bottom crate, given that m1=22.2kg, m2=33.5kg, m3=176kg.

This illustration shows a single pulley system with one string. Mass 2 is sitting on top of Mass3. These two masses are sitting on the floor. Mass1 is suspended in the air on the other side of the pulley.

2007-03-08 13:11:57 · 3 answers · asked by allyn_03 2

me and my boyfriend have lived in the same place for two years. recently he has started reciving electic shocks from the appliances, light switches, etc. i have never gotten these, altho i use all the same things as he does and touch the same things at the same times of day. we dont wear shoes inside, we have carpet, we even share socks so i dont know what it could be. why is he getting zapped but i am not?

2007-03-08 13:10:46 · 6 answers · asked by kate w 1

A capacitor consisting of two parallel plates of area A = 11.30 m2 and spacing d = 0.19 m is filled with two parallel slabs of dielectric material of equal thickness and with dielectric constants κ1 = 2.10 and κ2 = 8.50, respectively. What is the total capacitance?(parallel, not side by side)

2007-03-08 12:59:56 · 3 answers · asked by 2 2 1

2007-03-08 12:46:20 · 6 answers · asked by ^MomentaryInsanity^ 3

...would the transformer work?

2007-03-08 12:37:25 · 6 answers · asked by Alex J 1

2007-03-08 12:31:43 · 4 answers · asked by websterkollie 1

2007-03-08 12:20:50 · 8 answers · asked by joytoy 1

On the way to the moon the Apollo astronauts reach point where the Moon’s gravitational pull is stronger than that of Earth’s.
Determine the distance of this point from the center of the Earth. The masses of the Earth and the Moon are respectively 6.07×10^24 kg and 7.36x 10^22 kg. The distance from the Earth to the Moon is 3.6x10^8 m. Correct answer: 3.24291x 10^8 m.

Our teacher gave us the answer, and we are supposed to show the work. I don't get it though. I started off by writing the equation R=G x m x Mass of Earth all over r^2 + G x m x Mass of moon all over r^2, but my teacher said this was wrong. I really don't get it. She said that the things that I put =R have to be equal to each other instead.

Does anyone understand this?

2007-03-08 12:14:46 · 4 answers · asked by Nikita R 2

Newton's 1st law- If an object that is not moving will not move until a net force acts upon it, and if an object that is in motion will not change velocity (accelerate) until a net force acts upon it.

Newton's 2nd law- the rate of change of momentum of a body is proportional to the resultant force acting on the body and is in the same direction.

Newton's 3rd law- to every action there is always opposed an equal reaction

2007-03-08 12:07:11 · 4 answers · asked by Dalila Kitsune 1

Near the Earth's poles the magnetic field is about 1.08 G. (1 G = 1 10-4 T.) Imagine a simple model in which the Earth's field is produced by a single current loop around the equator. What current would this loop carry?

I was trying to use this:

2007-03-08 11:54:41 · 1 answers · asked by webogirl 2

Is there a difference between the density of deionised water and distilled water?
Is there any relationship of density of deionised water with temperature?
Is there any website that I can go to get any graph or table that gives the values of the density of deionised water with temperature?

2007-03-08 11:50:03 · 2 answers · asked by LiNg 2

ok i know i hae asked a few physics questions but for some reason this subject is just way over my head but here is the problem half is in a picture but i think i can explain it ...

a uniform plank is 4.9m and weighs 218N... it rest horizontally on 2 supports.... (the left support is at the beginning of the plank) and there is 1.1 m of the plank hanging over the right support. to what distance, X can a person who weighs 444N walk on overhanging part of plank before it just begins to tip???


ok so i tried f net = o and torque net = 0 so first off is that even the right thing to do???

if it is i obviously got lost somewhere in the middle or didnt set it up right b/c when i solved it through i got x=4.73 whicch is obviously incorrect b/c there is only 1.1m hanging over so he can't walk further than that... please explain in detail i would like to see where it was that i messed up this problem so i can be prepared for hte other problems and for my exams

2007-03-08 11:48:21 · 4 answers · asked by imjustmewhatelseshouldibe 1

I am getting frustrated with this problem. It's simple and I can not seem to find out what I am doing wrong. I am using Snell's Law and keep getting the answer 16.2 and it's wrong please explain how to obtain the correct answer. Thanks!

A ray of light impinges from air onto a block of ice (n = 1.309) at a 58.0° angle of incidence. Assuming that this angle remains the same, find the difference theta2, ice -theta 2, water in the angles of refraction when the ice turns to water (n = 1.333).

2007-03-08 11:41:39 · 2 answers · asked by scarletandgray07 1

2007-03-08 11:01:40 · 7 answers · asked by Anonymous

Seeing as expansion is constantly accelerating, would it ever be possible to generate power from this phenomenon?

Surely, there must be something driving this acceleration, something tangible...

2007-03-08 10:21:34 · 5 answers · asked by other_user 2

how does the heat conductivity of the metals affect the accuracy of the results

please help before tonight !
thank!

2007-03-08 10:10:45 · 1 answers · asked by ya 1

the volume of a bottle has been measured to be 485 mL. Use the terms significantes, accuracy, and precision to explain what this tells you about the way volume was measured.

2007-03-08 10:07:37 · 2 answers · asked by Anonymous

Nerve cells work by pumping sodium ions (Na+) out of the cell in order to maintain a potential difference across the cell wall. If Na+ carries a charge of 1.6×10-19 C as it is pumped with an electric force of 4.26×10-16 N, what is the electric field strength between the inside and outside of the cell?

I know you can use Coulomb's Law, but I don't know how to proceed because there doesn't seem to be enough information. How do you do this problem?

2007-03-08 10:05:15 · 2 answers · asked by Anonymous

2007-03-08 10:03:44 · 3 answers · asked by Ambegurl 3

When light travels through a vacuum should there be a fabric of some sort that causes light to behave like a wave?

2007-03-08 09:59:14 · 5 answers · asked by Anonymous