Question

convert 10.4m to cm.
i know the answer is 1040 but to get this answer but can someone clearly explain to me how it is derived

Answer 1

the prefix 'centi' means 'one hundredth'
compare with 'milli', 'micro', 'kilo' etc.

It is slightly 'abnormal in physics and engineering because most other prefixes are related to thoands, millions etc (factors of 10^3) whereas this is 10^-2.

However - look at a metre rule - it has 1000mm and 100cm on it

There are 100x as many cm as m

SO - take your 10.4m and multiply by 100 to get the number of cm.

To multiply by 100 - move the decimal point 2 places to the right.....

Answer 2

100cm=1m

Answer 3

therefore 10.4 m will be \[100\times10.4\]

Answer 4

1040cm

Answer 5

thanks:)

Answer 6

what about converting 50mm to cm

Answer 7

10mm=1cm

Answer 8

therefore 50mm will be \[50\times10\]

Answer 9

500cm

Answer 10

@Skrteljnr @CSmith

The above answer is wrong

This type of conversion is trivial, and if you have any intention of studying Physics you MUST do this stuff yourself.

Answer 11

@MrNood there is nothing wrong with asking a questions when studying Physics ...its how people learn.you ask questions and practice.

Answer 12

@ CSmith I agree - but there must be some element of having tried for yourself. It is not learning - to ask someone to simply make a trivial calculation on your behalf. I helped with some simple guidance on the first question. The second was a good case for the student to 'practice' but instead he asked for someone else to do it.

On top of that the answer is wrong - so the OP will go off - having given the question NO thought and present an incorrect answer.

I am all for guiding someone with conceptual issues - but believe that presenting them with answers to stuff like this does them a diservice in the long run.

I stand by my statement - if you have ANY interest in studying Physics - or any technical subject then you must get these simple arithmetic operations well established in your own head, and not rely on others to do it for you.

Of course, if you simply want a quick answer to check off your homework then you will probably find someone here to give oyu the answer - but you will not have learned anything from that.

Answer 13

um actually it is an example my teacher gave me i just need clarity to understance...hence why i said in the question i already have the answer.i already have it as an examle i just needed to understand it it has nothing to do with getting the answer

Answer 14

so why the 2nd question - to which you do not have the answer?

If you apply the information I gave you in my first answer - or indeed the EQUATION given by Skrteljnr then you can derive the answer easily for yourself. Whilst his equation is correct, his answer is wrong - and I presume you have not checked it.

Answer 15

yeah i have already checked i have the answers they are examples like i said i am preparing for midterms

Answer 16

so - what is 50mm in cm?

Answer 17

i got 5cm

Answer 18

do oyu understand how to make the conversion? or is this an answer given in your test paper?

Answer 19

i think i understand now that i have practiced.my answer is wrong above a?

Answer 20

No - it is correct.

Good luck with the midterms

Answer 21

yeah thanks:)