What did the Voyager mission discover about the main rings of Saturn?
A) There are hundreds of small moons in the ring system.
B) They were less dense than the rings of Jupiter.
C) There are several small moons inside the inner-most ring.
D) The ring system is much thicker than originally believed.
E) They are composed of tens of thousands of narrow ringlets.
E
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Water flowing in a pipe is similar to electric current flowing in a circuit. Which concept in the water flow system is analogous to the battery in an electric circuit?
a) Pump
b) water
c) valve
d) pressure
A 44.0-g block of ice at -15.0°C is dropped into a calorimeter (of negligible heat capacity) containing 100g of water at 5.0°C
When equilibrium is reached, how much of the ice will have melted? The specific heat of ice is 2090 J/kg ? K, that of water is 4186 J/kg ? K, and the latent heat of fusion of water is 33.5 × 104 J/kg. A) 5.2 g B) 4.4 g C) 21 g D) 2.1 g E) 52 g
Bernoulli's principle is a statement of the
A) conservation of linear momentum. B) conservation of mass. C) conservation of energy. D) conservation of kinetic energy. E) conservation of angular momentum.
A 0.600-kg piece of metal X is heated to 100°C and placed in an aluminum can of mass 0.200-kg which contains 0.500 kg of water initially at 17.3°C
The final equilibrium temperature of the mixture is 20.2°C, what is the specific heat of metal X? The specific heats of water and aluminum are 4186 J/kg ? K (water) and 910 J/kg ? K (aluminum). A) 140 J/kg ? K B) 270 J/kg ? K C) 450 J/kg ? K D) 900 J/kg ? K