Name three ways that Saturn's ring system is unique
What will be an ideal response?
It contains a lot more debris than all the other systems, it is made of young, bright shiny ice, it shows spoke patterns driven by the magnetic fields, and at solstice it is so bright it doubles the brightness of the planet.
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A 360-g metal container, insulated on the outside, holds 180.0 g of water in thermal equilibrium at 22.0°C
A 24.0-g ice cube, at the melting point, is dropped into the water, and when thermal equilibrium is reached the temperature is 15.0°C. Assume there is no heat exchange with the surroundings. For water, the specific heat capacity is 4190 J/kg ? K and the heat of fusion is 3.34 × 105 J/kg. What is the specific heat capacity of the metal of the container? A) 970 J/kg ? K B) 2800 J/kg ? K C) 1700 J/kg ? K D) 2300 J/kg ? K E) 3300 J/kg ? K
An ideal solenoid with 3000 turns is 70.0 cm long. If its self-inductance is 25.0 mH, what is its radius? (?0 = 4? × 10-7 T ? m/A)
A) 0.0222 m B) 52.0 m C) 0.00199 m D) 327 m
The observed slowing of a clock in the vicinity of a black hole is a prediction of
A) the Roche Limit. B) Special relativity. C) General relativity. D) Stellar nucleosynthesis. E) the Cosmological Principle.
Buoyancy: A piece of wood is floating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
A. It goes up. B. It goes down. C. It does not change. D. It cannot be determined without knowing the volumes of the two pieces of wood.