One of the most popular symbols of astronomy is Saturn with its system of rings. Describe the structure and makeup of these rings
What will be an ideal response?
Saturn's rings consist of small icy objects, of average size that of a snowball. They orbit independently in a narrow band a few tens of meters thick. From Earth there appear to be three main rings, with a notable gap called the Cassini Division caused by gravitational resonance with a moon. In reality, there are several more small and/or partial rings.
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_______________ require that a young hot star (T ? 25,000 K) be relatively nearby
Fill in the blank(s) with correct word
If gravity between the Sun and Earth suddenly vanished, Earth would continue moving in
A) a curved path. B) an outward spiral path. C) an inward spiral path. D) a straight-line path.
An electric motor produces 2.0 hp in a Vrms = 120 V circuit. What is Irms for this motor? (1 hp = 746 W)
a. 12 A c. 0.62 A b. 6.2 A d. 1.6 A
For the principle quantum number n = 4, how many values can the orbital quantum number have?
A. 9 B. 5 C. 4 D. 3 E. 32