Science & Mathematics - 6 September 2007

ok so i got the answer but can someone help me explain it please!
On a flight from Sydney, Nova Scotia to Saskatoon, Sask. the plane averaged 760km/hr. On the return trip from Saskatoon to Sydney, the same plane averaged 904km/hr. The distance from Sydney to Saskatoon is approximately 4112km. How much longer was the trip West than the trip East? How long was each flight in minutes?
ANSWER=Time = 4112/760 = 5.4 hrs ; 5.4hrs * 60 = 324 mins
Time = 4112/904 = 4.55 hrs = 273 mins

Sydney to Saskatoon = 324 mins
Saskatoon to Sydney = 273 mins
The trip West is 51 minutes longer

2007-09-06 14:01:05 · 3 answers · asked by sweethoney9079 4 in Mathematics

is there a generic brand?

2007-09-06 14:00:26 · 5 answers · asked by sezzahellokitty 1 in Medicine

2007-09-06 14:00:05 · 9 answers · asked by Robert m 2 in Biology

2007-09-06 13:58:50 · 1 answers · asked by Anonymous in Engineering

I need some help on the third part of this question.

A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x(t)= alpha t^{2}- beta t^{3}, where alpha = 1.56 m/s^2 and beta = 4.80×10−2 m/s^3.

Calculate the average velocity of the car for the time interval t=0 to t_1 = 2.00 s
Answer = 2.93 m/s

Calculate the average velocity of the car for the time interval t=0 to t_2 = 3.99 s.
Answer = 5.46 m/s

Calculate the average velocity of the car for the time interval t_1 = 2.00 s to t_2 = 3.99 s.
This is the part I need help figuring out.....

2007-09-06 13:55:35 · 1 answers · asked by Anonymous in Physics

1, 5, 13....

thanks!! =)

2007-09-06 13:55:11 · 15 answers · asked by :) 5 in Mathematics

make a counterexample for this conjecture plz??

2007-09-06 13:53:22 · 7 answers · asked by Anonymous in Mathematics

help me please

2007-09-06 13:51:57 · 7 answers · asked by camille E 1 in Mathematics

2007-09-06 13:51:49 · 35 answers · asked by Anonymous in Geography

1.What is the momentum of a 39.2 N bowling ball with a velocity of 7.0 m/s?


2.On earth where the acceleration due to gravity is 9.80 m/s2, in Newtons, how much does a 60.0 kg person weigh?

3.An object has a volume of 75.0 cm3 and a density of 14.9 g/cm3. What is the mass of this object in grams?

4.A braking force of 3,000.0 N accelerates a car from 57.8 m/s to rest in 8.2 seconds. What is the mass (in kilograms) of the car?

5.If the Sun is a distance of 1.5 × 1011 m from Earth, how long does it take sunlight (in seconds) to reach Earth if it moves at 3.0 × 108 m/s?

2007-09-06 13:47:07 · 1 answers · asked by miss_su_09 1 in Physics

2007-09-06 13:45:53 · 9 answers · asked by Anonymous in Zoology

& are prokaryotes and eukaryotes of the same kingdom?

2007-09-06 13:44:03 · 3 answers · asked by secretlytempted 3 in Biology

Your friend has slipped and fallen. To help her up, you pull with a force F, as the drawing shows. The vertical component of this force is 115 newtons, and the horizontal component is 165 newtons

A) Find The Magnitude
B) Find The Angle


2.) An ocean liner leaves New York City and travels 53.0° north of east for 215 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the following directions?
(a) due east


(b) due north

2007-09-06 13:42:53 · 1 answers · asked by yummy_girlscout 1 in Physics

2007-09-06 13:42:31 · 13 answers · asked by Nikki Monique 2 in Mathematics

Where can I get a reputable Ph.D. in Parapsychology? I'm from the USA and we just don't have one here! If you know one, even better know one that's offered online, please tell me!

2007-09-06 13:40:58 · 11 answers · asked by jlo5616 3 in Parapsychology

tank u for all da help
i was able to do da rest of my hw wifout any problems ^ ^
but i jus hav two more problems i got stuck on ><
check if its right plz ^ ^

5x - 2 (3 - x ) = - ( 4 - x )
5x - 6 - 2x = 4 - x
( 5x - 2x ? )
3x - 6 = 4 - x
+ x + x
4x - 6 = 4
+ 6 + 6
4x = 10
divide by 4
x = 10 / 4

it doesnt look rite to me >:[

andd....

1.5 ( 4x - 2 ) = 2 ( 0.5x - 3.5 )
6x - 3 = 1x - 7
- 1x - 1x
5x - 3 = - 7
+ 3 +3
5x = 4
divide by 5
x = 4/5?
ahh dat dont look rite either><

2007-09-06 13:39:24 · 4 answers · asked by Anonymous in Mathematics

2007-09-06 13:38:46 · 11 answers · asked by GVG 1 in Mathematics

will canada benefit from global warming?

2007-09-06 13:35:11 · 5 answers · asked by Linda Nguyen 1 in Earth Sciences & Geology

2007-09-06 13:34:47 · 8 answers · asked by cmj 2 in Mathematics

2007-09-06 13:33:25 · 2 answers · asked by cmj 2 in Mathematics

2007-09-06 13:31:51 · 1 answers · asked by lol 1 in Biology

2007-09-06 13:31:10 · 4 answers · asked by Anonymous in Mathematics

How can I solve problems like this?

A car accelerates from rest at -3.00 m/s2.

a. What is the velocity at the end of 5.0 s?
b. What is the displacement after 5.0 s?

How can I work this kind of problem? What do I need to remember for solving problems that inlcudes acceleration and velocity? If any1 help, help will be really appreciated.

2007-09-06 13:30:42 · 1 answers · asked by Man0fWzdom 3 in Physics

Example. somehtign like... -3.4 or 4 + Pi, pleas help me, i have a test tomorrow, and i want to understand this stuff. my textbook isnt much help.

2007-09-06 13:30:17 · 11 answers · asked by Anonymous in Mathematics

0.020kg...why would this have 2 significant digits instead of one...

2007-09-06 13:25:15 · 8 answers · asked by Steven V 2 in Mathematics

vi=initial sleep
a=acceleration
t=time
note that it is negative acceleration.

2007-09-06 13:22:45 · 1 answers · asked by shaggy 1 in Physics

Yes, I know the answer is 7 and 8, or -7 and -8, but I don't know how to do the work. This is where I get stuck...

x^2 + (x+1)^2 = 113

x^2 + x^2 +1 = 113

This SHOULD involve polynomial equations....

2007-09-06 13:22:04 · 4 answers · asked by poxatu 1 in Mathematics

How many sig figs does 7.00 have?

2007-09-06 13:21:36 · 1 answers · asked by Anonymous in Physics

i need to know

2007-09-06 13:20:38 · 19 answers · asked by Anonymous in Astronomy & Space

2007-09-06 13:20:36 · 8 answers · asked by Linda Nguyen 1 in Earth Sciences & Geology