Science & Mathematics - 4 October 2007

I have a sonic mouse repeller that says:

120v- 60Hz 12A. max

How many watts will it use each hour? Or each year?

2007-10-04 06:58:18 · 4 answers · asked by Anonymous in Mathematics

What sort of clouds are needed to make rain?

2007-10-04 06:57:21 · 2 answers · asked by Mike M. 7 in Weather

A. coherent
B. "you" centered
C. deceptive
D. postscripted

2007-10-04 06:54:56 · 4 answers · asked by Anonymous in Engineering

Please help . have maths h/w and i have to calculatre means on numbers

2007-10-04 06:54:21 · 9 answers · asked by Anonymous in Mathematics

I am trying to figure something out, but for some reason I keep hitting a brick wall. Any help would be VERY much appreciated!

I'm working on a spreadsheet right now for a fundraising thing. And basically, I need to know if there is any way to simplify what I'm trying to do.

With factorials, you're dealing with the PRODUCT of an integer and all the non-negative integers less than it. What I need to know is if there is any way to express the SUM of the integers. Like 5+4+3+2+1=15.

If that makes any sense at all, I'd appreciate any help. Thanks!

2007-10-04 06:50:46 · 5 answers · asked by Anonymous in Mathematics

2007-10-04 06:49:36 · 1 answers · asked by hayzman22 1 in Chemistry

find a cubic polynomial function f that satisfies the given conditions

rational zero 1/2, irrational zeros 1 + sqr(3) and 1 - sqr(3), coefficient of x is 2

*sqr = square root*

Answer: 2 ( x - 1 - sqr(3)) (x - 1 + sqr(3)) (x - (1/2)) ??

thanks for your help

2007-10-04 06:47:58 · 2 answers · asked by Oliver 2 in Mathematics

2007-10-04 06:46:03 · 1 answers · asked by psyquin0x 1 in Engineering

If the shape of an object is changed, does that change the shape of its gravitational field. or does a gravitational field always have to be spherical.

2007-10-04 06:45:50 · 4 answers · asked by Anonymous in Physics

2007-10-04 06:44:30 · 2 answers · asked by . 2 in Biology

Light year, Astronomical Unit, Kilometer or Mile?

I know that a mile beats out a kilometer, but the LY vs the AU is what's throwing me off. Please help and thank you.

2007-10-04 06:42:48 · 9 answers · asked by higherlovetx 5 in Astronomy & Space

2007-10-04 06:37:28 · 1 answers · asked by ladytilend 1 in Physics

At a fourth of July celebration, a rocket is launched with an initial velocity of 125 feet per second. The height (h) of the rocket in feet above sea level is modeled by the formula h=125t-16t(squared), where t is the time in seconds after the rocket is launched.

a. What is the height of the rocket when it returns to the ground?
b. how many seconds is the rocket in the air before it returns to the ground?
c. About how high does the rocket actually reach?

2007-10-04 06:37:24 · 4 answers · asked by taylor_travers098 2 in Mathematics

pressure transmitter to a cryogenic liquid point (liquid nitrogen)?

What additional steps would you have to take in order to take measurements (flow, pressure, etc.) on a cryogenic process?

2007-10-04 06:36:25 · 1 answers · asked by Coltsfan 2 in Engineering

Does everything and everyone eventually come to an end?

2007-10-04 06:31:52 · 7 answers · asked by Scott F 1 in Astronomy & Space

free electrons is a/an

A. coulomb
B. conductor
C. insulator
D. capacitor

2007-10-04 06:26:30 · 2 answers · asked by Felica0429 1 in Engineering

2007-10-04 06:26:24 · 3 answers · asked by bamagrits84 3 in Engineering

In Excel, how can I read a cell that has a decimal value into another (different) cell while also converting this decimal value into a hexidecimal value?

2007-10-04 06:21:47 · 4 answers · asked by Andrew M 2 in Engineering

They say that our Universe may not collapse back into a singularity but may just become unmoving, static. They go on to say that eventually our Universe will cool down to absolute zero. At this temperature I would assume everything would cease to exist. But, my question is; What becomes of all the energy? Why would our Universe cool?

Also, now say that our Universe is expanding at an ever increasing rate. Would the cooling work the same in this instance?

2007-10-04 06:21:41 · 3 answers · asked by Anonymous in Astronomy & Space

Plastic injection molding... what factors are there between the differences in perfomance wise???

2007-10-04 06:20:13 · 1 answers · asked by Robert R 1 in Engineering

water has one of the largest specific heats of any substance. why is it important to the human body?????

2007-10-04 06:18:31 · 4 answers · asked by dhana 1 in Chemistry

2007-10-04 06:18:17 · 17 answers · asked by Anonymous in Astronomy & Space

Accurate answers please! Thanks!

2007-10-04 06:17:10 · 8 answers · asked by ~*o*Babee.Bubblez*o*~ 2 in Physics

I know how to find the mass, i just need to know what steps do i need to do in order to do this. Like what kind of equipment would i need: graduated cylinder, beaker, stuff like that and I need to know how much water do i need in order to do this!!!!! Anyone please! Thanks

2007-10-04 06:11:51 · 3 answers · asked by B9O9R9I9C9U9A 3 in Chemistry

One wheel turns 33 1/3 revolutions per minute. A second wheel turns at 45 revolutions per minute. At some point,a mark on each wheel is at the lowest point on each wheel at the same time. What is the least number of seconds until the marks on both wheels are again at the lowest point at the same time?

2007-10-04 06:11:46 · 2 answers · asked by henri b 1 in Mathematics

An airplane, diving at an angle of 48.0° with the vertical, releases a projectile at an altitude of 760 m. The projectile hits the ground 6.00 s after being released. (Assume a coordinate system in which the airplane is moving in the positive horizontal direction, and in the negative vertical direction. Neglect air resistance.)
(a) What is the speed of the aircraft in m/s?
(b) How far did the projectile travel horizontally during its flight in meters?
(c) What were the horizontal and vertical components of its velocity just before striking the ground in m/s?

2007-10-04 06:11:33 · 2 answers · asked by Anonymous in Physics

How do you calculate gas flow through a volume

2007-10-04 06:10:02 · 1 answers · asked by nathaniel49 2 in Mathematics

The following reaction is at equilibrium at one atmosphere, in a closed container.
NaOH(s) + CO2(g) ↔ NaHCO3(s)
Which, if any, of the following actions will decrease the total amount of CO2 gas present at equilibrium?
adding N2 gas to double the pressure
adding more solid NaOH
decreasing the volume of the container
removing half of the solid NaHCO3
none of the above

2007-10-04 06:06:00 · 2 answers · asked by jennifer 2 in Chemistry

what plants are rich in tannin that grow during summer?

2007-10-04 06:03:31 · 3 answers · asked by czarie09 1 in Botany

A student forgot the Product Rule for differentiation and made the mistake of
thinking that (fg)' = f'g'. However, they were lucky and got the correct answer.
The function f that they used was f(x) = e^(x^2) and the domain of the problem was
the interval ( 1/2 , infinity). What was the function g?

2007-10-04 06:01:03 · 3 answers · asked by Anonymous in Mathematics