When 1.000 kg of ice melts,
J/kg of heat are needed. What is the entropy change in the melting process?
A. 758.0 J/K
B. 1,227 J/K
C. 1,684 J/K
D. 2,316 J/K
B. 1,227 J/K
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How would you include contact resistance between the two materials Derive the appropriate difference equations.
GIVEN
Interface between two materials with different thermal conductivities and contact resistance at the
interface
FIND
(a) The appropriate difference equations
SKETCH
The planet(s) of our solar system that are usually or never visible to the naked eye are
a. Mars. b. Mercury and Neptune. c. Saturn, Uranus, and Neptune. d. Uranus and Neptune. e. Mercury and Venus.
At the end of 1/2 second an apple freely falling from rest has a speed of
A) 1 m/s. B) 5 m/s. C) 10 m/s. D) more than 10 m/s.
A mass hangs on a spring held in a physicist's hand. When the mass is pulled down and then released, it oscillates with a period of 2.0 s. This system is taken to the Moon, where the acceleration of gravity is less. The spring on the Moon is held in an astronaut's hand, and the mass, when pulled down and released, will
A. oscillate with a shorter period. B. oscillate with a longer period. C. not oscillate at all. D. oscillate with an unchanged period.