Where is Jupiter's ring located? What is it made of, and why?
What will be an ideal response?
Between the top of Jupiter's clouds and the orbit of the closest moon; the ring also orbits just above Jupiter's equator. It may be in part debris from Io's violent volcanoes, and dust from the breakup of the tiny moons Tethys and Adrastea, both so close to Jupiter they are under great tidal stress. Ice particles like Saturn's rings cannot exist to close to hot Jupiter, which gives back into space twice the energy it gets from the Sun.
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Resistivity and Temperature: A carbon resistor has a resistance of 18 ? at a temperature of 20°C. What is its resistance at a temperature of 120°C? The temperature coefficient of resistivity for carbon is -5.0 × 10-4/C°.
A. 18 ? B. 17 ? C. 16 ? D. 15 ?
Two ice skaters are at rest and facing each other. One skater weighs 140 lbs and the other skater weighs 180 lbs. The skaters "push off" of each other. The 140 lb skater is moving at 5.00 m/s to the EAST. What is the velocity of the 180 lb skater?
A. 6.50 m/s EAST B. 6.50 m/s WEST C. 3.89 m/s EAST D. 3.89 m/s WEST E. 1.55 m/s EAST
Which produces an interference pattern when directed through two suitably spaced slits?
A) light B) sound C) electrons D) all of the above E) none of the above
A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (?0 = 8.85 × 10-12 C2/N ? m2)
A) 7.9 N/C B) 3.9 N/C C) 0.49 N/C D) 0.031 N/C