The formula for period is
T = 1 / f
, where “T” is period – the time it takes for one cycle to complete, and “f” is frequency. To get period from frequency, first convert frequency from Hertz to 1/s. Now divide 1 by the frequency. The result will be time (period) expressed in seconds.
What is SI unit of period?
The SI unit for the period, as for all measurements of time, is
the second
. A traditional unit of measure used with rotating mechanical devices is revolutions per minute, abbreviated r/min or rpm. 60 rpm is equivalent to one hertz.
What is the formula and unit of time period?
A time period (denoted by ‘T” ) is the time taken for one complete cycle of vibration to pass a given point. … The unit for time period is ‘seconds’. Frequency and time period are in a reciprocal relationship that can be expressed mathematically as:
T = 1/f or as: f = 1/T.
What is the shortest unit of time?
Scientists have measured the world’s smallest unit of time, and it’s called
the zeptosecond
.
How do you calculate time period of oscillation?
time is called T, the period of oscillation, so that ωT = 2π, or
T = 2π/ω
. The reciprocal of the period, or the frequency f, in oscillations per second, is given by f = 1/T = ω/2π.
What is the SI unit of viscosity?
Dynamic viscosity: The SI physical unit of dynamic viscosity (μ) is
the Pascal-second (Pa s)
, which is identical to 1 kg m
− 1
s
− 1
. The physical unit for dynamic viscosity in the centimeter gram second system of units (cgs) is the poise (P), named after Jean Poiseuille.
How fast is a jiffy?
That means that there are about three hundred thousand billion billion jiffys in a second. A jiffy also has an electrical meaning. It is the length of a single cycle of alternating current. In the UK’s 50Hz system, a jiffy is thus
one-fiftieth of a second
.
What is 1 second equal to?
One second is equal to
1/86,400 of a mean solar day
. This is easy to derive from the fact that there are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a mean solar day.
How fast is a Yoctosecond?
A yoctosecond (ys) is
a septillionth of a second or 10
– 24
s
*
. Yocto comes from the Latin/Greek word octo/οκτώ, meaning “eight”, because it is equal to 1000
− 8
. Yocto is the smallest official SI prefix.
What is the SI unit of viscosity * 2 points?
The unit of viscosity, accordingly, is
newton-second per square metre
, which is usually expressed as pascal-second in SI units.
What is the SI unit of input?
In the International System of Units (SI), the unit of power is the
watt (W)
, which is equal to one joule per second.
What’s faster than a jiffy?
THE
PLANCK TIMEA unit
of Planck time is how long it takes for light to travel a unit of Planck length. … A unit of Planck time is a about a sextillion times faster than a jiffy.
Is a moment 90 seconds?
A moment (momentum) is a medieval unit of time. … Although the length of a moment in modern seconds was therefore not fixed, on average,
a moment corresponded to 90 seconds
.
What is the longest measure of time?
- A year is the time it takes for the earth to revolve around the sun once. …
- A solar or tropical year is 365 days, 5 hours, 48 minutes, and 46 seconds. …
- A sidereal year is 365 days, 6 hours, and 9 minutes.
How long is 1 30th of a second?
Film runs at 24 frames per second while video runs at 30 fps, for example. So, for video,
1 frame
would be 1/30th of a second. 5 seconds would be 150 frames.
What is 1/1000th of a second?
A millisecond
(from milli- and second; symbol: ms) is a thousandth (0.001 or 10
− 3
or
1
/
1000
) of a second.