A neutron star is ________
A) the remains of a star that died in a massive star supernova (if no black hole were created)
B) a star made mostly of elements with high atomic mass numbers, so that they have lots of neutrons
C) the remains of a star that died by expelling its outer layers in a planetary nebula
D) an object that will ultimately become a black hole
A
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Gamma rays have less energy than infrared radiation
Indicate whether the statement is true or false
What is the average translational kinetic energy per molecule of an ideal gas at a temperature of ? The Boltzmann constant is 1.38 × 10-23 J/K
A) 1.7 × 10-21 J B) 8.3 × 10-21 J C) 6.2 × 10-21 J D) 2.1 × 10-21 J E) 4.1 × 10-21 J
Linear momentum
a. has the units of mass times acceleration. b. has magnitude and direction. c. is a scalar quantity. d. none of these
Which of the following industrialized democracies is the least efficient in its use of energy?
A) Great Britain B) Japan C) Italy D) West Germany E) United States