Science & Mathematics - 1 October 2007

2007-10-01 10:28:45 · 12 answers · asked by moonlight 1 in Zoology

Could someone help me with this math question? I've been trying all day to figure it out. I would really appreciate it thanks.

Tony leaves his house at 10:00 am and drives to his sister’s house. If the drive is at an average speed of 93km/h and the distance between their homes is 238.5 km at what time will he arrive at his sister’s house?

2007-10-01 10:28:13 · 8 answers · asked by ANdrea21 3 in Mathematics

2007-10-01 10:26:04 · 10 answers · asked by sameerferrari 3 in Mathematics

2007-10-01 10:25:31 · 4 answers · asked by Anonymous in Mathematics

do we get most of our oxygen from the ocean?
How does that happen?

2007-10-01 10:25:07 · 4 answers · asked by Philip Augustus 3 in Earth Sciences & Geology

-a 5.00 kg block rests on a horizontal plane. a force of 10.0 N applied horizontally causes the block to move horizonatally at constant velocity. what is the coefficient of kinetic friction between the block and the plane? assume g=9.80 m/s^2
please explain how you got this if you could:)

2007-10-01 10:23:19 · 1 answers · asked by nicki s 1 in Physics

supppose a block of mass 25.0 kg rests on a horizontal plane, and the coefficient of static friction between the surfaces is .220, -what is the max possible static frictional force that could act on the block?___N? -What is the actual static frictional force that acts on the block if an external force of 25.0 N acts horizontally on the block?____N.: please explain how you did these if you could:)

2007-10-01 10:19:38 · 2 answers · asked by nicki s 1 in Physics

plzz help!!!!!!!!!!!!!!!

2007-10-01 10:18:42 · 1 answers · asked by kitkat 3 in Physics

Ok, this problem is hard. And I need help on it. Alright here is the question:

Complete the Magic Square. The magic sum is 1 1/4.

Here is the magic square. When you add the to the right on each column the answer should be 1 1/4. And when you add down on each down column, it should also all be 1 1/4. Here is the diagram I drew in paint. It's exactly like the diagram I have on my sheet.

http://i21.tinypic.com/n6fe5s.jpg

There has to be a number on every blank square. Please help

2007-10-01 10:18:27 · 5 answers · asked by Chocolate Bunt 2 in Mathematics

is there a way to just look at these and know the answer?

I'm completely stumped.

2007-10-01 10:18:02 · 1 answers · asked by Ar J 2 in Mathematics

2007-10-01 10:14:39 · 6 answers · asked by Paul W 1 in Astronomy & Space

2007-10-01 10:12:14 · 7 answers · asked by jdimes1114 1 in Zoology

(for example a cyanin solution)

2007-10-01 10:09:49 · 2 answers · asked by chemistrygal 1 in Chemistry

2007-10-01 10:09:24 · 4 answers · asked by abigail s 1 in Chemistry

You place a 7.50 kg tv on a spring scale. If the scale reads 78.4N, what is the acceleration due to gravity at that location?

Like what equation do you use?

2007-10-01 10:08:12 · 5 answers · asked by Katie E 2 in Physics

A sample of 0.3220 g of an ionic compound containing the bromide ion (Br-) is dissolved in water and treated with an excess of AgNO3. If the mass of the AgBr precipitate that forms is 0.6364 g, what is the percent by mass of Br in the original compound?

2007-10-01 10:06:18 · 4 answers · asked by ws 3 in Chemistry

OK her here my questions.
Is 0(small 3)(ozone) a gas?
Is C2H5OH (alcohal) a liquid,gas or solid
what is the chemical formula for stomach acid and what is its IUPAC name?
What is a common use for iodine?
lastly what is the chemical formula and IUPAC name for carbonated beverages?

2007-10-01 10:01:43 · 2 answers · asked by Anonymous in Chemistry

2007-10-01 09:59:14 · 12 answers · asked by rey 1 in Medicine

Differentiate.
y=e^(6 x)/(1+3 x)
y'(x)=

Differentiate.
g(x) = 3sqrt(x)e^x
g'(x)=

2007-10-01 09:58:25 · 2 answers · asked by Anonymous in Mathematics

They are light brown, about an inch across and move quite fast. I don't know what type they are so any help on that would be appreciated! Also, how do I get rid of them?

2007-10-01 09:56:55 · 15 answers · asked by Anonymous in Zoology

i need 5 physical characteristics that are passed on and then 5 characteristics that are not physical that are passed on. can any one help me list some??

2007-10-01 09:54:02 · 1 answers · asked by luckeyme3 1 in Biology

2007-10-01 09:51:29 · 2 answers · asked by jjpierce10 1 in Mathematics

without using a grpahing calc and table of values

2007-10-01 09:50:00 · 3 answers · asked by maximumheat_89 1 in Mathematics

A. an outer energy level
B. a valence electron
C. a neutron
D. a proton

2007-10-01 09:48:57 · 4 answers · asked by Anonymous in Chemistry

I am helping my daughter with an Egypton project and we would like to make a peramid. But we want to do it right. Can any one tell me where I can find the info on the math behind all the sides and hight and angles. I know they were presise but I want to know how!

2007-10-01 09:45:47 · 6 answers · asked by Marvelgirl 3 in Mathematics

to america after he feard they will induct him into nazi army into world war 2? this is a most confusing statement. why did he run away from nazi germany when he feared he will be inducted into army? he disliked millitary service? he was jewish? he was a christian who disliked nazi german attitude towards jews? also tell me if he was indeed jewish, based upon your knowledge and not just these very confusing lies from wikipedia. thank you.

2007-10-01 09:44:52 · 3 answers · asked by tony 3 in Mathematics

HELP ASSAP

2007-10-01 09:44:22 · 3 answers · asked by DisneyGirl23 3 in Chemistry

Use the distributive property to rewrite the expression.

12(12+3)

(ex) 6(1+4) = 6 x 1 + 6 x 4


Determine the place value of the digit 4 in the whole number.

5480


Determine the place value of the digit 5 in the whole number

79,050,000


Write the whole number in words.

3,165


Write the whole number in words.

47,033,107


Write the whole number in standard form.

Seven million, twelve


Write the whole number in standard form.

Three thousand, three hundred seventy


Write the whole number in expanded form.

20,215


Write the whole number in expanded form.

39,689,345


Add

121,742 + 57,279 + 6586 + 426,782



Find the perimeter of the rectangle measured 21 miles by 10 miles

A homeowner is considering installing gutters around her home. To help her estimate the cost of gutters find the perimeter of the edge of her roof: measured 60 feet by 45 feet.

Make sure to label!


Subtract

62,222 - 39,898


Write the problem out and the answer to get full credit.

Find 108 less 36.

2007-10-01 09:43:53 · 1 answers · asked by Anonymous in Mathematics

i need help with this physics problem. i hav no idea how to solve it. please help me. thank you in advance.

A can of paint (volume = 3.78 10-3 m3) covers an area of 25.0 m2. What is the thickness of the paint on the wall?

2007-10-01 09:40:59 · 4 answers · asked by Quang P 2 in Engineering

gamma rays in paticular...will they have to cure cancer and other diseases that my pop up?...also our bodies are addicted to gravity

2007-10-01 09:38:09 · 8 answers · asked by j2ss2 2 in Astronomy & Space