Science & Mathematics - 2 October 2007

2007-10-02 15:50:27 · 1 answers · asked by taj6900 1 in Physics

A long, straight wire carries a current of 60 A. The magnetic field produced by this current at a certain point is 8.5 x 10^-5 T. How far is the point from the wire?

2007-10-02 15:49:58 · 1 answers · asked by Anonymous in Physics

2007-10-02 15:49:38 · 4 answers · asked by Nah Nah 1 in Biology

Also How many have eukaryotic cells?

2007-10-02 15:48:46 · 7 answers · asked by Brooke 2 in Biology

A river flows due south with a speed of 1.6 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.7 m/s due east. The river is 650 m wide.

What is the magnitude of his velocity relative to the earth?
What is the direction of his velocity relative to the earth?
How much time is required to cross the river?
How far south of his starting point will he reach the opposite bank?

2007-10-02 15:48:38 · 1 answers · asked by Anonymous in Physics

Mitosis has like 5 right?
- Interphase << -Prophase
-Metaphase
-Anaphase
-Telophase

For Meiosis......it is what? I know it has Meiosis I and Meiosis II but I am not entirely sure...

2007-10-02 15:47:49 · 4 answers · asked by celestial_yellow_munky 1 in Biology

2007-10-02 15:46:53 · 3 answers · asked by element69ca 1 in Engineering

An airplane is flying with a velocity of 92.0 m/s at an angle of 21.0 degrees above the horizontal. When the plane is a distance 118 m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.

How far from the dog will the suitcase land? You can ignore air resistance.

2007-10-02 15:46:45 · 1 answers · asked by Anonymous in Physics

This question is for a project (animal researched has to be considered dangerous)
I researched that it can be aggressive if you threaten its territory, and making sudden movements (trigerrs certain instincts).
So final question: please help!
what first aid is necessary, if you get attacked by a florida panther?

appreciate your help so much, and please quote a reliable source

2007-10-02 15:41:13 · 4 answers · asked by harleyrider786 1 in Zoology

(y^5)^3 (y^3)^2 / (y^4)^4

2007-10-02 15:40:39 · 8 answers · asked by babby_bear30_99 1 in Mathematics

i need help on this homework...

2007-10-02 15:37:50 · 2 answers · asked by puppy_lovermpm 1 in Biology

2007-10-02 15:35:20 · 2 answers · asked by tammy u 1 in Biology

An ant walks away from the top of a ball. If the ant starts to slip when the normal force on its feet drops below one-half its weight, at what angle does slipping begin?

Note: No frictional forces
I understand that N=1/2m in the equation N=mg, therefore 1/2m=mg and 1/2=g , but I do not know how to solve from there.

2007-10-02 15:34:50 · 3 answers · asked by dogbitte 2 in Physics

Write the balanced net ionic equation for each of these acid-base reactions. Enter the formula of the cation (if any) first, then neutral species (if any), followed by the anion (if any) with coefficients (if needed; do not include 1 as a coefficient). Put charges (if any) in parentheses (multiple first, if any, followed by sign) and phase in parentheses, e.g., Al3+(aq) should be entered as Al(3+)(aq). In each case, write the formulas of the spectator ions.

HBr(aq) + NH3(aq) ?
ive got a part of this

____+ NH3(aq) ---> NH4(+)(aq) +______

HClO(aq) (a weak acid) + NaOH(aq) ?
i got part of this too
HClO(aq) + ______---->______ + _______

HClO4(aq) + Ca(OH)2(aq) ?
i got a part of this one too

H3O(+)(aq) + ________ -----> ________

Identify the spectator cation= Ca(2+)(aq)
what is the spectator anion= i have no idea

2007-10-02 15:32:51 · 1 answers · asked by Anonymous in Chemistry

Given: The energy equivalent of one gallon of gasoline is 1.3 x 10^8 J. A compact car has a mass of 751 kg and its efficiency is rated at 15.8%. (That is 15.8% of the input power available is delivered to the wheels). Find the amount of gasoline used to accelerate the car from rest to 26.7 m/s. Answer in units of gal.

2007-10-02 15:32:13 · 1 answers · asked by natty 1 in Physics

Okay, is the most mass of an atom in the nucleus or outside of it? & explain. I'm stuck! =[

2007-10-02 15:30:13 · 6 answers · asked by Anonymous in Chemistry

2007-10-02 15:30:08 · 3 answers · asked by greeny 2 in Weather

Some of the following react when added together, but others do not. For those that do, write a balanced net ionic redox equation. Enter the formula of the cation (if any) first, then neutral species (if any), followed by the anion (if any) with coefficients (if needed; leave 1s off as they are implied). Put charges (if any) in parentheses (multiple first, if any, followed by sign) and phase in parentheses, e.g., Al3+(aq) should be entered as Al(3+)(aq). If there is no reaction, enter none in all the boxes.


HCl(aq) + Al(s) ?

Ive gotten parts of it here is what i have

________+2Al(s) --->_______+ 3H2(g)+______H2O(l)

2007-10-02 15:29:28 · 1 answers · asked by Anonymous in Chemistry

Please , help me , I think it foer a day, but I cannot solve it.
the square root of (6^2+x+7)subtract the square root of (3x+2) = 2

2007-10-02 15:26:17 · 1 answers · asked by Anonymous in Mathematics

A driver of a car traveling at 15.0 m/s applies the brakes, causing a uniform acceleration of -2.0 m/s^2. How long does it take the car to accelerate to a final speed of 10.0 m/s? How far has the car moved during the braking period?

the textbook has the equation to get the Time but i need the Displacement (how far)...but to get the Displacement i need the Time. anyone help me please??

2007-10-02 15:20:28 · 4 answers · asked by Anonymous in Physics

f(x) = 2x^2 + 3x and how do u knw wat it is?? thanks for the help

2007-10-02 15:19:01 · 3 answers · asked by cool 3 in Mathematics

Enter your answer as ordered pair(s). If there are multiple answers, separate them with a comma.

ps. the answer would look something like: (-4+/-squa55,0)(-4-squ55,0)

2007-10-02 15:17:47 · 4 answers · asked by Phuong w 1 in Mathematics

Does anyone know of a website where I can graph parametric equations with TWO variables? I can only find sites that allow me to graph simple one-variable equations. Specifically, I want to graph the following:

x = V cos(24.09) sin u
y = V cos (24.09) cos u
z = V sin (24.09)

0 < u < 360
0 < V

(And no, my graphing calculator does not support this)

2007-10-02 15:17:06 · 2 answers · asked by Professor 1 in Mathematics

3x-y=3
5x+y=5

the solution is (1,0) but how do u graph it?

2007-10-02 15:14:03 · 2 answers · asked by ahhhhhh 1 in Mathematics

How Tall Are The Flowers?
Jennie and Trevor measured the heights of two beautiful flowers growing in a garden – one red
and one blue.
(a) Jennie told her friend Sara that five times the height of the blue flower added to four times
the height of the red flower is exactly one metre. Show all the possible heights of the flowers.
(b) From Jennie’s information, Sara didn’t know the actual heights of the flowers, so she asked
Trevor what he had found out. He told her that the red flower is seven centimetres taller than
the blue one. show the possible heights of the two flowers based on this information.

2007-10-02 15:11:57 · 3 answers · asked by SuperAwesomePhunThyme 1 in Mathematics

2007-10-02 15:09:26 · 1 answers · asked by wiz monk 1 in Mathematics

2007-10-02 15:09:05 · 2 answers · asked by Dalila 1 in Mathematics

the north pole doesnt get warm even though it receives sunlight for over 24 hours a day. why are the poles cold climate areas

2007-10-02 15:08:37 · 10 answers · asked by Anonymous in Weather

Most of the cultivated fields in California are heavily irrigated. Over the years, most of the imported water has evaporated from the soil leaving behind solutes. So what problems this will cause to plants. Please answer if you know the answer, I have a quiz tomorrow. Thank you.

2007-10-02 15:07:58 · 2 answers · asked by assoloperpiano 2 in Biology

2007-10-02 15:07:48 · 2 answers · asked by Anonymous in Mathematics