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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

DaveRobinsonUK
2010-09-10 22:22:27

Hi Bob
Sorry for the delay, been a while since my last post.

Love it :---- houseboat smile

bob bundy
2010-09-08 06:08:06

Hi Dave

Your log fire reminded me of the following:







roflol

bob

leealden06
2010-09-07 21:31:42

Scientific notation, also known as standard form or in exponential notation, is a way of writing numbers, which can contain values for large or small to be easily written in standard notation decimal notation.Scientific was developed to easily represent numbers are either very large or very small.Sometimes, especially when you use a calculator, you can come up with a very wide range.

bobbym
2010-05-31 19:23:56

Correct!

DaveRobinsonUK
2010-05-31 19:21:07


tongue

bobbym
2010-05-31 19:20:35

Nope, no trips planned. So you had logs and logarithms. An extra week, sounds great.

DaveRobinsonUK
2010-05-31 19:17:42

It was great, until I was literally handing my passport over to the baggage handler when a woman leant over and wispered in her ear. She then said that all flights from Corsica to UK we cancelled for at least a week. There was a huge panic and a run on the airline desk. Luckily we have a house over there, so we just went home and had an extended holiday.

Took Emma to the beach everyday and made sand castles, and studied logarithms in the afternoons. Log fires in the evenings. Very nice smile

You off anywhere this year?

ZHero
2010-05-31 18:32:09

DERIVED UNITS!!!!

that's Exactly what you call them!!

I had forgotten he he . .

bobbym
2010-05-31 18:26:10

How was Corsica!

DaveRobinsonUK
2010-05-31 18:25:05

Ahh

I see now.

Unit for Acceleration (m/s)/s







Derived units.

Cool, happy now smile

bobbym
2010-05-31 18:03:50

Hi Dave;

That's the general way with experimental data. Although you can ask for decimal points too.

DaveRobinsonUK
2010-05-31 18:02:12

Hi Bobby

Thanks for that, I didn't know about the accuracy. That's handy to know and makes sense too, kind of like Amdahls's Law for functions, although none of my tutors have ever mentioned it.

Just shows you that you should always consult others rather than taking one persons word for it.

ZHero
2010-05-31 17:49:29

DaveRobinsonUK wrote:

How is it that s is -2 though kg is -1. Does it just denote that m/s is a ratio and kg is a definite unit?

s is -2 coz its meter per second squared (unit of acceleration).

understand it like this..









As you can see, it appears to be a ratio but is rather a "Rate of Change w.r.t Time"!
rolleyes

bobbym
2010-05-31 17:08:52

Hi David;

Did you get the same units I did? 5.962 is 4 significant digits. Question is slightly off. You can never get more significant digits that than the least accurate input. In this case 9.8 is the least precise input with 2 significant digits. Therefore all rounding if I remember correctly is to 2 significant digits.

m/s is read meters per second.

DaveRobinsonUK
2010-05-31 17:05:45

Hi Bobby and ZHero

Yes, I got

, it asked for the answer to 3d.p.

How is it that s is -2 though kg is -1. Does it just denote that m/s is a ratio and kg is a definite unit?

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