A Parallel Universe. Imagine a parallel universe in which the electric force has the same properties as in our universe but there is no gravity. In this parallel universe, the sun carries-charge Q, the earth curries charge ?Q, and the electric attraction between them keeps the earth in orbit. The earth in the parallel universe has the same mass, the same orbital radius, and the same orbital period as in our universe. Calculate the value of Q. (Consult Appendix F as needed.)
GEOS 103.001 – Observing Our Cosmos Edinboro University Course Dr. David Hurd Week 8 Class Lecture Notes (3/21 – 3/23) 3/21 Sun rises in east, sets in the west (generally, with exceptions) o Due to rotation on Earth’s axis Solar noon = the position of the sun on our meridian of longitude On page 8 in the blue packet, we filled out the Annual Variation of Sun at Solar Noon and the Length of day in Edinboro: Most important days: VE = Vernal Equinox o Sun is 48 ͦabove horizon at solar noon o 12 hours of sunlight o The sun rises in E and sets in W o Intersects CE SS = Summer Solstice o 71.5 ͦabove horizon o Approx. 14hr 30min of sunlight Longest day of the year o Sun rises in NE, sets in NW o The sun in the furthest north from the CE that it will ever be AE = Autumnal Equinox o 48 ͦabove horizon o 12 hours of sunlight o The sun rises in E and sets in W o Intersects CE WS = Winter Solstice o 24.5 ͦabove horizon o Approx. 8 hours of sunlight Shortest day of the year o Sun rises in SE, sets in SW o Sun is furthest south from CE that it will ever be 3/23 You always fin the sun, moon, and planets along the ecliptic o The ecliptic is marked by the twelve zodiac constellations Therefore the plane of our solar system is also marked by the zodiac