Just remember that the period is the reciprocal of the frequency.
The frequency is 30 per second, or 30 'Hertz'.
The frequency is 720Hz
Using V = fλ ,speed = 10 x 30= 300 msˉ¹
Electromagnetic radiation is characterised by its frequency. Frequency is measured in Hertz, abbreviated Hz. To a radio man 'high frequency' is in the range 2MHz to 30 MHz. Other e-m radiation is listed below, lowest frequency first VHF UHF Microwaves Millimeter waves Infrared Visible Light Ultraviolet Soft X-rays Hard X-rays Gamma rays.
10 to the power 7 Hz is 10 MHz, so that is HF (high frequency); this range of radio waves goes from 3 to 30 MHz.
Just remember that the period is the reciprocal of the frequency.
Mathematically, frequency = (1/Period) Conceptually, the period is how long it takes a wave to begin repeating itself. For example, if I start a stopwatch when the wave reaches its peak, and then stop timing when it reaches its next peak, the time on the stopwatch is the period. The frequency is how far the wave gets in 1 second. Some examples: If it take a wave 30 seconds to go through one cycle, the period is 30 seconds. In 1 second, it gets only 1/30 of the way through its cycle. Its frequency is 1/30 then. If a wave repeats itself 10 times in 1 second, its frequency is 10. It's period must be 1/10 of a second.
The frequency is 300/30 = 10 Hz The time period is 30/300 = 0.10 seconds
Speed = (wavelength) times (frequency) = (wavelength) divided by (period) = 30/5 = 6 meters per second
30
10%
10%
10%
The yearly frequency of drought in this scenario is 3 droughts in 30 years, which equates to 1 drought every 10 years on average.
An X-ray has a frequency in the range 30 petahertz to 30 exahertz, that is 30×1015 Hz to 30×1018 Hz.
The longest factor string of 30 is 2 x 3 x 5.
The yearly frequency of drought during the 30-year period is 3 droughts in 30 years, which equals one drought every 10 years on average.