Science & Mathematics - 5 November 2007

thanks for your help in advance

2007-11-05 18:46:04 · 2 answers · asked by Anonymous in Mathematics

What will happen if all the appliances listed are used on the same 15 a circuit at the same time.


1)a 1200 w stream iron
2) a 600 w, teo-cup coffee
3)a 60 w stereo
4)a 40 w lamp



EXPLAIN PLEASE

2007-11-05 18:39:16 · 4 answers · asked by Anonymous in Engineering

solve the following equation using the substitution method only.

3x + 4y - z = 2
2x - 3y + z = -5
5x -2y + 2z = -3

im pretty confused on how to use substitution with three variables, can someone please help?

2007-11-05 18:36:29 · 2 answers · asked by nasgmx,zncv xc 2 in Mathematics

You are holding a shopping basket at the grocery store with two 0.50 kg cartons of cereal at one end of the basket. The basket is 0.79 m long. Where should you place a half gallon of milk (1.8 kg) so that the center of mass (COM) of your groceries is at the center of the basket?

2007-11-05 18:20:37 · 1 answers · asked by =P 6 in Physics

In a football game, a tackle running at a constant speed of 6 m/s tackles a stationary receiver. The two fly off horizontally at 3 m/s. If the mass of the tackle is 145 kg,

a.) What is the mass of the receiver?

b.) Calculate the kinetic energy of the tackle-receiver system before and after the collision.
KEsys, i =
KEsys, f =

2007-11-05 18:19:04 · 2 answers · asked by =P 6 in Physics

2007-11-05 18:10:52 · 4 answers · asked by Muah 2 in Biology

2007-11-05 18:10:44 · 6 answers · asked by gina b 1 in Mathematics

The base sequence of a single strand of DNA is "C-T-A-G-C-G-A-T-T". What is the base sequence of its complementary DNA?

2007-11-05 18:09:30 · 7 answers · asked by Anonymous in Biology

looking?http://paranormal.about.com/gi/dynamic/offsite.htm?zi=1/XJ&sdn=paranormal&cdn=newsissues&tm=1456&gps=368_610_1011_477&f=22&su=p284.8.150.ip_&tt=2&bt=1&bts=1&zu=http%3A//www.hyper.net/ufo/occupants.html

2007-11-05 18:08:27 · 23 answers · asked by Life goes on... 6 in Paranormal Phenomena

here the question :
list the function below from lowest asymptotic order to highest asymptotic order.If any two (or more) are the same asymptotic order, indicate which.
a.start with these basic function:
n 2^n n lg n n^3
n^2 lg n n-n^3+7n^5 n^2+lg n

b. combine the following functions into your answer for part (a).assume 0 e^n root n 2^n-1 lg lg n
1n n (lg n)^2 n! n^1+e

2007-11-05 18:06:55 · 2 answers · asked by Anonymous in Mathematics

/\
/...\
/ \
the figure is in the form of the letter A the gaps and the dotted line in the middle represent the resistors there are totally 5 of them each of resistance 3 ohm
find the resistance between th points x and y
and explain how u did it

/\
/…\
x / \y

2007-11-05 18:03:56 · 3 answers · asked by Anonymous in Physics

2007-11-05 18:03:04 · 15 answers · asked by Anonymous in Biology

Find the speed for the given motion of a particle. Find any times when the particle comes to a stop.

the line through the points (2 , -1) and (1 , 3)

2007-11-05 18:00:56 · 1 answers · asked by Sultana 2 in Mathematics

An earlier question about parallel universes got me to thinking about something that may be compeletly off the wall.

Could it be possible that some ghost sightings are really live people in the time period in which they lived and we are just veiwing some kind of time portal? Just wondering what your thoughts on this are.

2007-11-05 17:59:16 · 15 answers · asked by Anonymous in Paranormal Phenomena

2007-11-05 17:56:44 · 6 answers · asked by Anonymous in Medicine

Suppose a rotating spherical body such as a planet has a radius r and a uniform density p, and the time required for one rotations is T. At the surface of the planet, the apparent acceleration of a falling object is reduced by the acceleration of the ground out from under it. Derive an equation for the apparent acceleration of gravity,g, at the equator in terms of r,p,T, and G.

Applying the equation above, what fraction is the apparent weight reduced at the equator compared to the poles, due to the Earth's rotation?

From the equation above, derive an equation giving the value of T for which the apparent acceleration of gravity becomes zero, such as objects can spontaneously drift off the surface of the planet. Show that T only depends on p, and not on r.

2007-11-05 17:55:44 · 1 answers · asked by Anonymous in Physics

2007-11-05 17:53:17 · 15 answers · asked by Kiran R 1 in Astronomy & Space

1. Trees are usually identified by the characteristics of their leaves. Suggest two ways in which trees could be identified during winter when they have no leaves.

2. Suppose you wanted to identify and classify all birds that come to a particular bird feeder during a spring day. What are some common characteristics you would use in classifying the birds?

3. Describe three ways in which pieces of clothing are classified in a department store.

thanks!

2007-11-05 17:51:19 · 1 answers · asked by J.C 1 in Biology

why must the nucluer membrane break down for mitosis to occur?
why is DNA tightly coiled during ,mitosis

2007-11-05 17:47:26 · 2 answers · asked by Muah 2 in Biology

2007-11-05 17:41:06 · 1 answers · asked by antifascista24 1 in Biology

a crate and its load have a combined mass of 1600 kg. what is the tension in the supporting cable when the crate, originally moving downward at 12 m/s, is brought to rest with constant acceleration in a distance of 42 m.

please show how to solve and also answer

2007-11-05 17:40:01 · 2 answers · asked by magna1211@sbcglobal.net 1 in Physics

1) 1200 w stream iron
2) a 600 w, two-cup coffee maker
3) a 60 w stereo
4) a 40 w lamp

2007-11-05 17:32:37 · 5 answers · asked by Anonymous in Engineering

and so now we aren't getting the vitamins and minerals that we are suppost to get. Is there any scientific evidence for this or is this just a direct market sales pitch.

2007-11-05 17:31:35 · 2 answers · asked by Peggy Pirate 6 in Earth Sciences & Geology

answer today 05 november

2007-11-05 17:28:41 · 4 answers · asked by mary ann m 1 in Biology

2007-11-05 17:28:40 · 18 answers · asked by gayatri 2 in Astronomy & Space

one problem that came up during a quiz...and i'm puzzled.

2007-11-05 17:23:04 · 5 answers · asked by dada 1 in Biology

2007-11-05 17:18:41 · 5 answers · asked by Muah 2 in Biology

The answer is (2)^(1/2) but I do not know how to explain the fact that I assumed it converge in order to solve for it.

2007-11-05 17:17:19 · 3 answers · asked by Anonymous in Mathematics

2007-11-05 17:03:12 · 5 answers · asked by Howard S 1 in Mathematics

2007-11-05 17:03:04 · 1 answers · asked by antifascista24 1 in Biology