Tycho Brahe's contribution to Kepler's Laws of Planetary Motion was:
A) his detailed and accurate observations of the planet's position.
B) his observations of Jupiter's moons.
C) a mathematical explanation of epicycles.
D) a precise lunar calendar.
E) the correct explanation of lunar phases.
A
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Answer the following statement true (T) or false (F)
Do you think it is possible that a 1-solar-mass horizontal branch star could harbor an advanced civilization? Explain your reasoning
What will be an ideal response?
Which of the following types of galaxies have a disk and spheroidal component but lack spiral arms?
A) lenticulars B) ellipticals C) irregulars D) all of the above
When two lamps are connected in series to a battery, the electrical resistance that the battery senses is
1) more than the resistance of either lamp, 2) less than the resistance of either lamp, And when the same two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is 3) more than the resistance of either lamp. 4) less than the resistance of either lamp. 5) none of these