- 1 When the sun was directly overhead in Syene why was it not directly overhead in Alexandria?
- 2 Why is the sun never directly overhead?
- 3 Is the city of Syene on the equator Why does the sun radiate vertically at this location?
- 4 What is the distance between Alexandria and Syene?
- 5 When you step from the shade into the sunlight?
- 6 What is the value of the velocity of the ball when it reaches?
- 7 Where is sun directly overhead?
- 8 What position is the sun at noon?
- 9 Which Tropic is the sun now?
- 10 Is day longer than night at the equator?
- 11 What is the longest day in summer?
- 12 When the sun’s rays are directly overhead at the Tropic of Capricorn?
- 13 Is Syene on the equator?
- 14 How much of a circle is 7.2 degrees?
- 15 What is the equivalent of 5000 stadia?
When the sun was directly overhead in Syene why was it not directly overhead in Alexandria?
When the Sun was directly overhead in Syene, why was it not directly overhead in Alexandria? Because Alexandria is 800km north of Syene. 4. The Earth, like everything else illuminated by the Sun, casts a shadow.
Why is the sun never directly overhead?
Answer: For continental U.S. the answer is never. Since the Earth’s rotation axis is tilted 23.5 degrees with respect to its orbital motion around the Sun, one would have to be less than 23.5 degrees above or below the equator to have the Sun pass directly overhead (once per year).
Is the city of Syene on the equator Why does the sun radiate vertically at this location?
This conclusion was based on the assumption that the Sun was far enough away (compared to the distance between Syene and Alexandria) that the rays of incoming sunlight at both locations were parallel. Because the sunward direction is the vertical direction at Syene on this day.
What is the distance between Alexandria and Syene?
Eratosthenes estimated the distance from Alexandria to Syene as 5,000 stadia, or about 500 miles (800 kilometers).
When you step from the shade into the sunlight?
When you step from the shade into the sunlight, the Sun’s heat is as evident as the heat from hot coals in. a fireplace in an otherwise cold room. You feel the Sun’s heat not because of its high temperature (higher. temperatures can be found in some welder’s torches) but because the Sun is big.
What is the value of the velocity of the ball when it reaches?
Conclusion: The magnitude of the velocity of the ball is 26.3 m/s for the parabolic motion just before it hits the ground and this greater than the 17.1 m/s for the velocity of the ball that falls straight downward. Notice the figure above has the positive y direction upward.
Where is sun directly overhead?
You may have noticed two special lines of latitude on a globe of the world: One in the Northern Hemisphere called the Tropic of Cancer at +23.5° latitude and one in the Southern Hemisphere called the Tropic of Capricorn at − 23.5° latitude. These are the latitudes where the Sun is directly overhead at noon once a year.
What position is the sun at noon?
The sun is directly overhead at noon. At the Decrmber Solstice, the sun is always to the south, and never quites get directly overhead. The equator has 12 hours of sunlight every day of the year.
Which Tropic is the sun now?
The Tropic of Cancer is currently positioned at 23.4 degrees north of the Equator. And the Tropic of Capricorn is at approximately 23.4 degrees south of the Equator. This is because the Earth is tilted at 23.4 degrees.
Is day longer than night at the equator?
Daylight at the equator is always a bit longer than darkness, the result of the refraction of light through the atmosphere that allows us to see the sun a few minutes before it rises and a few minutes after it sets.
What is the longest day in summer?
Father’s Day is the longest day of the year! The official start of summer kicks off in the Northern Hemisphere today ( June 20 ), marking the longest day of the year — which also happens to coincide with Father’s Day.
When the sun’s rays are directly overhead at the Tropic of Capricorn?
The winter solstice marks the shortest day and longest night of the year. In the Northern Hemisphere, it occurs when the sun is directly over the Tropic of Capricorn, which is located at 23.5° south of the equator and runs through Australia, Chile, southern Brazil, and northern South Africa.
Is Syene on the equator?
The Earth is now known to measure about 24,900 miles around the equator, slightly less around the poles. Eratosthenes had made the assumption that the sun was so far away that its rays were essentially parallel, that Alexandria is due north of Syene, and that Syene is exactly on the tropic of cancer.
How much of a circle is 7.2 degrees?
Since there are 360 degrees in a circle, 7.2 degrees is 1/50 of an entire circle.
What is the equivalent of 5000 stadia?
Eratosthenes assumed the distance between the two cities at 5,000 stadia ( 575 miles ).