Actually at 23.5 degrees it is never overhead because the Earth's axial tilt is only 23.44 degrees. However, for the purposes of this answer let us round up to 23.5 degrees.
The Tropic of Cancer is located at 23.5° North of the equator.
The Tropic of Capricorn lies at 23.5° South of the equator.
There is one day each year when the Sun is overhead (90 degrees) at these latitudes. In the North this is at the Summer Solstice in June (around the 21st) each year and in the South it is at the Winter Solstice in December (around the 21st) each year.
During the solstice (our summer for north, our winter for south).
90 degrees
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the equater A+ 90 degrees
The sun rises each year at the South Pole about September 21 and sets each year about March 21. This means six months with no sunsets. The maximum height of the sun above the horizon is only 23.5 degrees, so you could consider it less sun, except that you don't offer a comparison.
During the solstice (our summer for north, our winter for south).
23.37 degrees Meaning that the Poles are tilted at 23.37 degrees to the angle at which the Sun's rays strike the Earth.
The sun's rays are strongest at 0 degrees latitude.
yes
The climate is cooler at 45 degrees latitude compared to 0 degrees latitude because the Sun is shining at a different angle. At 0 degrees latitude, the Sun is shining directly overhead, and thus it receives highly-concentrated sun rays which heat up the Earth rapidly. However, at 45 degrees latitude, the Sun is shining at a slanted angle, which makes the sun rays spread over a larger area and warming the Earth at a slower rate.
The angle of incidence equals the angle of reflection. Therefore, if your angle of incidence is 15 degrees, your angle of reflection equals that also. If it is 45 degrees, your angle of reflection is also 45 degrees, and so on.
LEss than a 45 degree angle
Either the answer will be that they contain more solar energy, it strike's the earth at an angle greater than 90 degrees, or it could be that they spread energy over a larger surface area.
From the Tropic of Cancer (23.45 degrees north) to the Tropic of Capricorn (23.45 degrees south).
an angle
an angle
An angle.