1. Given the distance from Earth to Sun is 150,000,000 km, through what distance does Earth move in a second? An hour? A day?
2. Given that the angular size of Venus is 55'' when the planet is 45,000,000 km from Earth, calculate Venus's diameter.
3. What angle would Erathosthenes have measured had Earth been flat?
2006-09-14 11:23:55 · 4 answers · asked by dmbfan598 2 in Science & Mathematics ➔ Astronomy & Space
the earth is moving through space at the rate of approximately 20.1 km/sec or 72,360 km/hr (approximately 12.5 mi/sec or 45,000 mph) toward the constellation of Hercules.
2006-09-14 11:38:27 · answer #1 · answered by babygirl4us 4 · 0⤊ 0⤋
Hi. Hints only. 1) 150,000,000 km is the radius of a circle that the Earth take exactly one year to travel around. 2) Trig problem. 0 degrees 0 minutes 55 seconds is the angle, 45,000,000 km is one side of the triangle. 3) The shadows would be parallel on a flat Earth...
2006-09-14 12:13:24 · answer #2 · answered by Cirric 7 · 1⤊ 0⤋
Earth's solar velocity is 29,790 meters/second
2006-09-14 11:53:45 · answer #3 · answered by ? 3 · 0⤊ 0⤋
Maybe they should change the name to Yahoo Homework...
2006-09-14 11:25:43 · answer #4 · answered by AmigaJoe 3 · 0⤊ 0⤋