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1. ### solve the following differential equation:( 1 + x^2) y' + 3xy = 5x, given if y = 2, then x = 1 ?

( 1 + x^2) dy/dx + 3xy = 5x Separate the variables and integrate: dy / (5-3y) = xdx / ( 1 +x²) Integrating the left side: ∫dy / (5-3y) u=5-3y du=-3dy - ...

3 Answers · Science & Mathematics · 11/08/2011

2. ### 1 nanometre = ________?

Prefixes for any unit pico 10 to the power of -12 = 1 / 1 ,000,000,000,000 nano 10 to the power of -9 = 1 / 1 ,000,000... 1 nm = 0.000 000 001 metres 1 nm = 0.000 000 000 001 kilometres 1 nm = 0.000 000...

11 Answers · Science & Mathematics · 04/07/2008

3. ### 1 .65m man, eyes 1 .5m from ground, must be 3.2m from mirror to see full image. height and position of mirror?

...height of the bottom of the mirror from the ground, By geometry x/3.2 = 1 .5 / 6.4 x = 0.75 m i.e. half his foot to eye height...

1 Answers · Science & Mathematics · 22/04/2010

4. ### 1 % Speed of Light to Mach?

1 % the speed of light = 2,997,924.58 meters/sec mach 1 = 340.29 meters/sec 2,997,924.58 meters/sec...you wind up with: 2,997,924.58 meters/sec x (mach 1 / 343 meters/sec) = ( 2,997,924.58 x 1 ) / (343) = 8740...

3 Answers · Science & Mathematics · 11/01/2013

5. ### 1 megameter = _______ km.?

1 mega meter is 10^6 meters or 10^3 km

5 Answers · Science & Mathematics · 26/04/2008

6. ### Is it better to say 1 .0 x 10^14 or 1 .02 x 10^14 in the following problem?

1 .0 * 10^14 is the correct answer, if this were a problem bases on...in the factor which has the least number of significant digits. 1 .209*10^6 has 4 significant digits 8.4*10^7 has 2 significant...

3 Answers · Science & Mathematics · 13/02/2012

7. ### How does e become equal to 1 ?

It becomes 1 when you choose to use a system of units in which e= 1 .... You probably mean: e^x = 1 , then x=0.

6 Answers · Science & Mathematics · 06/06/2011

8. ### 1 .What is simple machine?

1 . A simple machine is a mechanical device that changes the direction or magnitude of a force. 2. There... to either hold them in place or is used to move one relative to the other EXAMPLES: 1 .pulleys-----engines 2.levers-------seesaw 3.wheel and axels------gears 4.inclined...

1 Answers · Science & Mathematics · 07/07/2011

9. ### question # 1 , question #2, and question #3?

1 . a. Acceleration is 20 m/s / 5 s = 4 m/s^2 1 .b. Decelaration is -20 m/s / 2 s = -10 m... speed (40m/s + 0 m/s)/2 = 20 m/s 2.c. d= 1 /2at^2 = 1 /2.8.5^2 = 100m 3. d= 1 /2at^2 + vt v= v0 + at 150 = 1 ...

1 Answers · Science & Mathematics · 16/01/2007

10. ### How many oxygen atoms are in 1 .0 g of water?

1 . H₂O = 18 gram/mole Number of moles of water in 1 g of water: 1 /18 mole Number of water molecules in 1 g of water...

2 Answers · Science & Mathematics · 26/12/2012