SI unit stands for System International. It is a scientific procedure that helps in describing the immensity and characteristic of a naturally occurring important events. These units are internationally accepted and are very widely used in the scientific world.
There are total <u>7 fundamental SI units</u> and they are-
Kg (kilogram)- to express mass
s (second)- to measure time
K (kelvin)- to measure temperature
A (ampere)- to measure current
Mol (mole)- to express the substance amount
cd (candela)- to express intensity of a luminous substance
As you may know, one light-year is equivalent to approximately 63241.1 Astronomical Units. To get your answer, simply multiply 63241.1 * 8 to get ≈505929 AU
The wavelength of the wave is 160 m, and this is the distance between two consecutive crests. The boat is located at a crest of the wave, this means that the first trough is located 80 meters from the boat (because the distance between a crest and a trough is half the wavelength).
The speed of the wave is so the time the boat takes to reach the first trough is