List the four Galilean moons and describe their unique characteristics
What will be an ideal response?
Callisto: outermost of the moons, tidally locked to Jupiter, ancient surface of rock and ice, has no core
Ganymede: largest moon of the Solar System, rocky core and ice-rich mantle, has an ancient surface and an area of bright grooved terrain, strong magnetic field, experiences tidal heating
Europa: surface is active and young, has a liquid-water ocean lying just below its icy surface, experiences tidal heating
Io: innermost Moon, more than 150 active volcanoes on its surface, thin sulfuric-based atmosphere, has no water or ice
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What other information do we combine with the luminosity of a Type Ia supernova to measure its distance?
A: energy. B: apparent brightness. C: temperature. D: size. E: redshift.
The newton is a unit of
A) force. B) mass. C) density. D) inertia.
A large stratified brine/water pond has a surface temperature of 140ºF and air at 70ºF moves across the pond at 15 mph. Estimate the convective heat transfer at the pond surface per unit area.
What will be an ideal response?
You want to swim straight across a river that is 76 m wide. You find that you can do this if you swim at an angle of ? = 28° from the upstream direction at a constant rate of 1.5 m/s relative to the water
At what rate does the river flow? The angle ? is measured from the river bank (directly upstream is ? = 0° while directly across the river is ? = 90°). A) 1.3 m/s B) 0.70 m/s C) 1.6 m/s D) 1.8 m/s