Suppose we compare the combined mass of a C atom and an O2 molecule, both at rest, with the mass of a CO2 molecule, also at rest. According to Einstein's theory, the combined mass of the C and O2 is
A) slightly less, by an amount so small that it hard to measure, than the CO2 molecule's mass.
B) precisely equal to the CO2 molecule's mass.
C) considerably more than the CO2 molecule's mass.
D) considerably less than CO2 molecule's mass.
E) slightly more, by an amount so small that it hard to measure, than the CO2 molecule's mass.
E
You might also like to view...
The acceleration of gravity on Earth is approximately 10 m/s2 (more precisely, 9.8 m/s2). If you drop a rock from a tall building, about how fast will it be falling after 3 seconds?
A) 30 m/s B) 10 m/s C) 30 m/s2 D) 10 m/s2 E) 20 m/s
Which of the following is the best answer to the question "Why does the Sun shine?"
A) The Sun initially began generating energy through nuclear fusion as it formed, but today, it generates energy primarily through the sunspot cycle. B) The young Sun became hotter through gravitational contraction. Once the core was hot enough, nuclear fusion began and has kept the Sun shining ever since. C) The Sun initially began making energy through chemical reactions. These heated the interior enough to allow gravitational contraction and nuclear fusion to occur. D) As the Sun was forming, nuclear fusion reactions in the shrinking clouds of gas slowly became stronger and stronger, until the Sun reached its current luminosity.
Galaxies in all directions are observed to be streaming away from us as if we were in the center of the universe
Contrast this impression with the Cosmological Principle and explain why a simple-minded interpretation of the Hubble expansion is incorrect.
the length of time a star spends in the main sequence stage depends on its
What will be an ideal response?