- #1
George3
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URGENT Time of sunset using Radius of earth
The Sun sets, fully disappearing over the horizon as you lie on the beach, your eyes 20 cm above the sand. You immediately jump up, your eyes now 170 cm above the sand, and you can again see the top of the Sun. If you count the number of seconds ( = t) until the Sun fully disappears again, you can estimate the radius of the Earth. Use the known radius of the Earth to calculate the time t.
2 sig figs
radius = 6400m
radius + height = 6400.015
cos(R/(R + h)) = .54 radians
(time/ 1 day) = radians/ 2pi
time = ? I don't think I am doing this right because I am getting like 73000 seconds with this method.
Homework Statement
The Sun sets, fully disappearing over the horizon as you lie on the beach, your eyes 20 cm above the sand. You immediately jump up, your eyes now 170 cm above the sand, and you can again see the top of the Sun. If you count the number of seconds ( = t) until the Sun fully disappears again, you can estimate the radius of the Earth. Use the known radius of the Earth to calculate the time t.
2 sig figs
Homework Equations
The Attempt at a Solution
radius = 6400m
radius + height = 6400.015
cos(R/(R + h)) = .54 radians
(time/ 1 day) = radians/ 2pi
time = ? I don't think I am doing this right because I am getting like 73000 seconds with this method.
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