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Units for v(frequency)

Posted: Thu Oct 11, 2018 2:37 pm
by Madeera_Mian_3B
Was doing the homework and noticed that for some of the problems they would use s^-1, while in others they would use Hz. Does it matter what units we use for frequency? or should they match with the rest of the calculations by using s^-1.

Re: Units for v(frequency)

Posted: Thu Oct 11, 2018 2:46 pm
by Deepika Pugalenthi 1A
s^-1 and Hz can be uses interchangeably because they are the same thing. Usually, in problems it is given in Hz so I would recommend using Hz instead of s^-1.

Re: Units for v(frequency)

Posted: Thu Oct 11, 2018 4:02 pm
by Henry Krasner 1C
Yes, Hz and s^(-1) can be used interchangeably. That is why in the formula c=λv for instance, that the unit of m for wavelength and Hz or s^-1 for frequency combine to create c, which is 3.00 x 10^8 m.s^-1

Re: Units for v(frequency)

Posted: Thu Oct 11, 2018 11:38 pm
by Sana_Mian_3G
They can both be used, but I would check the what the problem is asking for and the units that are needed.

Re: Units for v(frequency)

Posted: Thu Oct 11, 2018 11:50 pm
by MadisonB
They can both be used (and are basically the same thing), but make sure that all units cancel when you reach the end of the problem.

Re: Units for v(frequency)

Posted: Thu Oct 11, 2018 11:54 pm
by g orloff 1J
the units are Hz and s^(-1)

Re: Units for v(frequency)

Posted: Fri Oct 12, 2018 12:44 am
by Archana Biju 1G
Hz and s^-1 can be used interchangeably but I think s^-1 is best when used in equations and Hz is best to state your final answer.

Re: Units for v(frequency)

Posted: Sat Oct 13, 2018 11:39 am
by Sean Reyes 1J
Hertz (Hz) and s^-1 are the same thing.

1 Hz = 1 s^-1

Re: Units for v(frequency)

Posted: Sat Oct 13, 2018 11:41 am
by Sean Reyes 1J
Also, depending on what the question calls for, use the corresponding units.
So if the question asks for an answer in Hertz, obviously just use Hertz. But for equations, they use s^-1, implying that s^-1 is usually meant more for calculations.

Re: Units for v(frequency)

Posted: Sat Oct 13, 2018 12:39 pm
by Karishma_1G
Hertz and s^-1 can be used interchangeably. Hertz is the unit for frequency which can be written and thought of as cycles/second. Thus Hertz and 1/second are the same.

Re: Units for v(frequency)

Posted: Sat Oct 13, 2018 1:24 pm
by ArielKim3C
Hz and s^(-1) are used interchangeably but it may be easier to use s^(-1) during calculations just to ensure that all the units cancel out by the end. The final answer would most likely then be stated using Hz.

Re: Units for v(frequency)

Posted: Sat Oct 13, 2018 3:14 pm
by Ricardo Martin 1J
Hz and s^-1 are interchangeable because they are equivalent. I see Hz used more often than s^-1, but I doubt that you will be marked wrong for using one or the other.