Science & Mathematics - 5 October 2007

how many minutes would it take to drive 19 miles going 80 mph?

2007-10-05 10:53:15 · 7 answers · asked by carolina y 1 in Mathematics

Do you think it is right to alter the genetic mutation of plants if the scientists are using genes that are already there but randomly rearranging them until they come up with something "better"? Or do you think it is wrong to alter nature with the chance that something could go wrong?

2007-10-05 10:52:39 · 6 answers · asked by Anonymous in Other - Science

The multi-meter M is a multi-mode measuring instrument capable to measure either voltage or current depending on its mode switch. part 1
What is the magnitude of the voltage shown by the multi-meter, when it is set in the voltmeter mode. Use the following data: ε = 12.0, R1 = 12.1 Ω, R2 = 39.7 Ω, R3 = 37.5 Ω, R4 = 14.5 Ω.
5.85 V - ans
second part
What is the magnitude of the current shown by the multi-meter, when it is set in the ammeter mode. ?

2007-10-05 10:52:27 · 1 answers · asked by Anonymous in Physics

a) temperature decreases rapidly with height
b) temperature increases with height
c) air pressure is relatively high
d) wind is nearly calm
e) relative humidity is low

2007-10-05 10:51:43 · 4 answers · asked by Princess 3 in Weather

The 380 kG was taken from another question that was asked recently, and accounts for the total weight of all the missions. Independent of that, I read in these forums that the moon is moving away the earth at 2 or 4 cm per year. Are these related? The distance to the moon is measured with a corner reflector and lasers.

2007-10-05 10:51:10 · 9 answers · asked by Anonymous in Astronomy & Space

2007-10-05 10:46:39 · 1 answers · asked by Anonymous in Physics

f(x)=x^4-5x^3-50x^2/6x+2

given that find the vertical asymptote and horizontal asymptotes

find the x-intercepts
PLEASE find the following and you will get 10 points

2007-10-05 10:44:23 · 3 answers · asked by star baller 360 5 in Mathematics

It was pink, about a quarter of an inch long (maybe a little less), and kind of resembled a small cricket. I'd never seen one before, and it was in my bathroom sink. I wasn't sure if I should just wash it down the drain, or leave it be. Might it have been a juvenile cricket?

2007-10-05 10:44:07 · 1 answers · asked by Dsonuvagun 3 in Zoology

given f(x) = (4-x)(x+5)/(-4x-4)(5x-4)
find vertical asymptote and the horizontal asymptotes
who ever anser this correctly will get 10 points

2007-10-05 10:39:21 · 1 answers · asked by star baller 360 5 in Mathematics

I mean, is it usually done? Or, are these type of equations intended just for single and double displacement reactions?

2007-10-05 10:37:46 · 1 answers · asked by Chris D 1 in Chemistry

i was using it to find an interesection in a graph and it came up???
it's a TI 83 PLUS

2007-10-05 10:36:28 · 3 answers · asked by [xo♥ox] 1 in Mathematics

who ever answer this correctly eill get 10 points:
the curve of the graph is a degree 3 polynimial and it goes through the points (5,-1.8) find the polynomial

2007-10-05 10:35:44 · 3 answers · asked by star baller 360 5 in Mathematics

find the exact value under the given conditions:

cos alpha = (sq root 5) / 5 . . . . 0
sin beta = -4/5 . . . . . -pi/2

please help and explain thanks

2007-10-05 10:34:03 · 1 answers · asked by rickyricardoiscool 1 in Mathematics

Explain the difference between the absolute and apparent magnitudes of stars using the Sun as an example.

2007-10-05 10:33:29 · 7 answers · asked by Angel 1 in Astronomy & Space

establish each identity:

a) cos ((3pi/2) + theta) = sin theta

b) cos (alpha + beta) + cos (alpha - beta) = 2cos alpha cos beta


please help me and explain, my book is horrible!!

2007-10-05 10:30:17 · 3 answers · asked by rickyricardoiscool 1 in Mathematics

vinegar solutions: white vinegar is a solution of acetic acid in water. there are two strengths of white vinegar----a 5% and a 10% solution. How many millilitres of each solution must be mixed to make 50 ml of a 9% vinegar solution?



i dont get this... so far i have "let x represent 5%solution" and "let y represent 10% solution" i have no clue what to do now?

2007-10-05 10:30:06 · 5 answers · asked by Anonymous in Mathematics

I like sitting by a fire in the backyard w/ a drink to warm me.

2007-10-05 10:27:44 · 20 answers · asked by ? 6 in Weather

i know, a stupid question but i am just not sure.

thanks :)

2007-10-05 10:20:31 · 3 answers · asked by Elizabeth 3 in Physics

a. alpha
b. beta
c. gamma

2007-10-05 10:20:12 · 3 answers · asked by Darly F 1 in Physics

A stockbroker trades stock for 100 days. On day 1 he loses $100. Every day after that, he loses $100 more than on the previous day. What is his average daily loss during the 100 – day period?

You must show your work to get best answer!!!

2007-10-05 10:15:38 · 3 answers · asked by butterflyangel 3 in Mathematics

math

2007-10-05 10:15:25 · 12 answers · asked by Edna R 2 in Mathematics

I'm a high school junior. and no I will not do a model of a planet/solar system as my project

2007-10-05 10:09:23 · 5 answers · asked by Anonymous in Astronomy & Space

2007-10-05 10:08:36 · 14 answers · asked by Anonymous in Astronomy & Space

In one of Michelson's experiments, a beam from a revolving mirror traveled 14 km to a stationary mirror. How long a time interval elapsed before the beam returned to the mirror?

2007-10-05 10:07:25 · 1 answers · asked by w_rayas07 1 in Physics

2007-10-05 10:07:21 · 3 answers · asked by Anonymous in Zoology

I need yet some more help with my physics. I'm looking to understand it, not just for an answer. Thanks in advance to anyone who can help explain how to solve this...

a UFO weighing 1.14*(10^4)kg is about to touch down on the moon, where the acceleration due to gravity is 1.6 m/s^2. At 165m above the surface, the downward velocity (it's moving straight down) is 18 m/s. what is the magnitude of thrust needed to reduce the velocity to 0 the instant the UFO touches down?

So far I'm pretty lost, except that I get that the 1.6m/s is going to be replacing the 9.8 standard here on Earth.

Thanks to anyone who can help me understand this.

2007-10-05 10:06:30 · 1 answers · asked by mr_peepers810 5 in Physics

How long does it take for a pulse of laser light to reach the moon and bounce back to Earth?_______s

2007-10-05 10:06:30 · 2 answers · asked by w_rayas07 1 in Physics

A person driving her car at 60 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection (Fig. 2-29). Should she try to stop, or should she make a run for it? The intersection is 15 m wide. Her car's maximum deceleration is -6.2 m/s2, whereas it can accelerate from 60 km/h to 70 km/h in 3.0 s. Ignore the length of her car and her reaction time.
If she hits the brakes, how far will she travel before stopping?

________m

If she hits the gas instead, how far will she travel before the light turns red?

________m.

Sorry there is no picture!!! :(

2007-10-05 10:05:48 · 1 answers · asked by melon 1 in Physics

Calculate how many cm3 of 1.00moldm-3 HCl acid are needed to decrease the pH of 1.00dm3 of HCl acid by one unit. Ignore the small change in volume!

2007-10-05 10:05:44 · 1 answers · asked by }{3@T 2 in Chemistry

2007-10-05 10:03:19 · 5 answers · asked by tim c 2 in Chemistry