When the direct rays of the Sun hit the equator, it is either the Vernal (Spring) Equinox or the Autumnal Equinox, when there are 12 hours of sunlight and 12 hours of darkness in one 24 hour day.

<span>When the direct rays of the Sun hit the Tropic of Cancer it is the Summer Solstice in the Northern Hemisphere. The day of the year with the most sunlight hours in the Northern Hemisphere, and the least sunlight hours in the Southern Hemisphere. </span>

<span>When the direct rays of the Sun hit the Tropic of Capricorn it is the Winter Solstice in the Northern Hemisphere. The day of the year with the least sunlight hours in the Northern Hemisphere, and the most sunlight hours in the Southern Hemisphere.

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4 0

3 years ago

Long Island Sound has an average depth of 19.9 meters and a length of 156 kilometers (that is, 156,000 meters). What is the natu

White raven [17]

Answer:

natural period = 22.341 × 10³ s

not expecting development of tides

Explanation:

given data

average depth = 19.9 meters

length = 156 km = 156000 m

to find out

the natural period of oscillation of Long Island Sound

solution

we know that natural period formula that is

natural period = $\frac{2l}{\sqrt{gh}}$ ................1

here l is length and h is average depth

put here value in equation 1

natural period = $\frac{2l}{\sqrt{gh}}$

natural period = $\frac{2*156000}{\sqrt{9.8*19.9}}$

natural period = 22.341 × 10³ s

here i think of very long dam expected length 30 to 50 km be built from coasts straight out to sea or ocean without enclosing

tidal phase difference are introduce across the dam

that leads to significant water level differential in shallow coastal sea

but here not expecting development of tides

4 0

3 years ago