Science & Mathematics - 8 October 2007

A ball is thrown upward from the ground with an initial speed of 31 m/s. At the same instant, a ball is dropped from rest from a building 15 m high. After how long will the balls be at the same height?
s

I tried to graph the movment of the two objects and and used the point of intersection as the awnser, but the webassign program said i was wrong. Any help would be great.

2007-10-08 14:07:35 · 1 answers · asked by Anonymous in Physics

( to protect an egg )

2007-10-08 14:06:45 · 1 answers · asked by lance b 1 in Physics

Jennifer has a set of tiles that are all the same size. She arranges them in a retangular design that has a perimeter of 38 tiles. Which choice could be the number of tiles she has?

A. 24 B. 48 C. 36 or D. 52

2007-10-08 14:05:30 · 7 answers · asked by Miss Pleo 2 in Mathematics

it says find the derivative.. and the equation to find it as u know is Lim h-->0 f(x+h) - f(x) / h


1. r(s) = sq.rt(2s+1)


thanks

2007-10-08 14:05:28 · 2 answers · asked by Katie 4 in Mathematics

Consider the acceleration of gravity to be
10 m=s2 :
What is the magnitude of the instantaneous
velocity (speed) of a freely falling object 18 s
after it is released from a position of rest?
Answer in units of m=s.

The answer to that is 180 m/s

how do i figure out teh avg speed?

2007-10-08 14:05:27 · 1 answers · asked by Jarod S 2 in Physics

what would be the name of an intrusive igneous rock with only quartz and feldspar? My geology teacher didn't have a clue

2007-10-08 14:01:49 · 4 answers · asked by rock_man 3 in Earth Sciences & Geology

A. x + y = 8

B. y = 1/2x -1

C. x = -2

2007-10-08 14:01:39 · 2 answers · asked by Marshall W 2 in Mathematics

2007-10-08 13:59:48 · 4 answers · asked by salim d 1 in Mathematics

2007-10-08 13:59:02 · 2 answers · asked by Anonymous in Mathematics

2007-10-08 13:56:24 · 2 answers · asked by shauna s 1 in Chemistry

2007-10-08 13:53:58 · 3 answers · asked by Anonymous in Mathematics

Tagamet 0.2 g needs to be given at the label recommends 200 mg / 2ml

What would the dosage be?

2007-10-08 13:50:30 · 2 answers · asked by whisper2ya 2 in Chemistry

2007-10-08 13:47:33 · 2 answers · asked by globuggy89 1 in Geography

0.005g is given orally every morning and the available dose is 5 mg per tab

how many tabs?

2007-10-08 13:46:50 · 3 answers · asked by whisper2ya 2 in Medicine

When 37.5 L ammonia and 42.0 L oxygen gas at STP burn, nitrogen monoxide and water are produced. After the products return to STP, how many grams of nitrogen monoxide are present?

2007-10-08 13:46:48 · 1 answers · asked by ws 3 in Chemistry

A mixture of gases contains 0.34 mole CH4, 0.44 mole C2H6, and 0.28 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases.
PCH4

PC2H6

PC3H8

2007-10-08 13:46:10 · 1 answers · asked by ws 3 in Chemistry

A drug is ordered 0.125 mg orally and the recommended administration is scored tablet 250 mcg

The answer is 0.5 tab
Can someone please show me how they got to this answer

2007-10-08 13:43:57 · 1 answers · asked by whisper2ya 2 in Medicine

2007-10-08 13:43:16 · 1 answers · asked by lkiyohiro 1 in Engineering

Does anyone know these things about Piezoelectricity?

1) If you want to see the effects of Piezoelectric crystals, should you place them them in a circuit (between two piece of wire, connected to an ammeter. Then, place a lot of force on the Piezoelectric crystal, and see what the ammeter reports? Or will that not work? Thanks.

2) A Piezoelectric crystal generates electricity when something strikes it, right? But the electricity needs to be conducted through the crystal, right? So is there the faintest possibility that changing the temperature will change the amount of current (like in conductor's resistances)?

THANKS!

2007-10-08 13:39:54 · 1 answers · asked by magixter 2 in Physics

Find the Lateral Area, Surface Area, and Volume of a cone with radius 5 cm and slant height 13 cm. Use pi = 3.14 and round your solutions to the nearest hundredth if necessary.
Show your work for credit.

2007-10-08 13:32:20 · 2 answers · asked by Anonymous in Mathematics

2007-10-08 13:32:07 · 2 answers · asked by Anonymous in Astronomy & Space

Given the points (1, -4) , (x , 5) and slope, m= 3 ; solve for x


Anyone know what type of formula would be used here

2007-10-08 13:30:06 · 7 answers · asked by Anonymous in Mathematics

Is this proof of gods existance?Please read.?
It's so funny that people call their ansisters apes........................ woulden't ever want to live as an ape.

Here is my FACTS and common sense....LITERITLY


www.godandscience.org

www.doesgodexist.org

www.snapshotsofgod.com/ev...

www.spiritualperspectives...

www.creationism.org/heinz...

toptenproofs.com/article_...


There is so much more of these and so much less disapproving God

2007-10-08 13:29:37 · 11 answers · asked by Josh j 1 in Zoology

2 patches of grass on field are 9x 12 feet. One bage of grass seed covers 15 yards. How many bags will be needed to cover field with grass seed? Oh and how we get this would be wonderful.
Thanks!

2007-10-08 13:27:14 · 10 answers · asked by SexyMamaNurse 2 in Mathematics

OKay... my question is do you square the x and then multiply the coefficient?

2007-10-08 13:25:24 · 5 answers · asked by Anonymous in Mathematics

How far is Kolob?

2007-10-08 13:25:06 · 4 answers · asked by 890987 1 in Astronomy & Space

what is the goverment hideing from the public about the international space station.it has another pourpose what

2007-10-08 13:24:14 · 8 answers · asked by Anonymous in Astronomy & Space

2007-10-08 13:24:01 · 2 answers · asked by netsc 1 in Chemistry

Which is smaller?

2007-10-08 13:22:15 · 6 answers · asked by xboxgamer7 1 in Biology

2007-10-08 13:22:06 · 1 answers · asked by brian_rambadan 2 in Physics