If one could observe the individual atoms making up a piece of matter and note that during a process of change their motion somehow became more orderly, then one may assume which of the following in regard to the system?
a. increases in entropy
c. gains in thermal energy
b. decreases in entropy
d. positive work done on
D
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In California in 2001, the wholesale price of natural gas jumped from about $4 per thousand cubic feet to $11 . The former price translates into a cost of $0.04 per kWh for the utility, while the latter translates into $0.11 per kWh
California utilities can only charge around $0.08 per kWh. Given this price and assuming the other costs are the same as those in 1991, determine about where the fossil-fuel steam generation will be the same in cost as gas.
What is at the center of a planetary nebula?
A: the core of the dying star B: something that will eventually become a neutron star C: something that will eventually become a white dwarf D: both A and B E: both A and C
Granite is a common type of
A) meteoritic rock B) metamorphic rock C) igneous rock D) sedimentary rock
The mass of a proton is 1.6726 × 10-27 kg and the mass of a neutron is 1.6606 × 10-27 kg. A proton captures a neutron forming a deuterium nucleus. One would expect the mass of this nucleus to be
A) equal to (1.6726 + 1.6606 ) × 10-27 kg. B) less than (1.6726 + 1.6606 ) × 10-27 kg. C) greater than (1.6726 + 1.6606 ) × 10-27 kg.