Cell phones use RF waves from nearby cell towers. RF waves fall in between FM radio waves and microwaves
Answer:
The general shape of a frequency distribution. For many data sets, statisticians use this information to determine whether there is a “normal” distribution of values. In normal distributions, the mean, median, and mode are the same. Whether the distribution is symmetrical or skewed in a certain direction. If the data is skewed to the right, this shows the mean will be greater than the median. Similarly, if the data is skewed left, the mean will be less than the median. The symmetry, or asymmetry, of the chart can help statisticians calculate probability. The modality of the data set. This means how many peaks exist in the data. For normal distributions, there will be one peak, or mode, in the data set.
Explanation:
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Answer:
The time period of the rope waves is seconds
Explanation:
The period of a wave, T is equal to 1 divided by the frequency of the wave
The number of waves produced per second by the wave = 7 waves
Therefore;
The frequency of the wave, f = 7 complete cycles per second = 7 Hz
f = 7 Hz
The time period of the rope waves, T = seconds
Radio waves is the type of electromagnetic radiation, which is used in communication devices such as cellular telephones.
<span>Electromagnetic radiations are of many types which includes: Radio, Microwave, Infrared, Visible, Ultraviolet, X-rays and gamma rays, in which electric and magnetic field vary simultaneously. These rays or radiations are classified by wavelength.
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