What is the binding energy of 12C? The mass of an atom of 12C is 12 u (exactly), of an atom of 1H is 1.007825 u, and of a neutron is 1.0086649 u.
A. 137 MeV
B. 104 MeV
C. 92.2 MeV
D. 46.1 MeV
E. 7.68 MeV
C. 92.2 MeV
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Earth moves about 30 km/s relative to the Sun. When you jump upward in front of a wall, the wall doesn't slam into you at 30 km/s because the wall
A) has too little gravity to influence you. B) moves in the opposite direction to you. C) and you move at the same horizontal speed, before, during, and after your jump. D) has negligible inertia compared with the Sun.
The diagram above represents energy levels in a hydrogen atom. Each level is labeled with its energy (above the ground state of Level 1) in units of electron/volts (eV). The labeled transitions represent an electron moving between energy levels. Which transition represents an electron that absorbs a photon with 10.2 eV of energy?
A) A B) B C) C D) D E) E
The Fermi temperature of copper is 80 000 K. The corresponding Fermi energy (in eV) is
a. 7 b. 5 c. 3 d. 1 e. 4
Artificial transmutations are generally achieved using
a. Geiger counters. b. particle accelerators. c. tokamaks. d. mass spectrometers.