A deuterium nucleus and a tritium nucleus react to yield one alpha particle, a neutron, and energy. This is an example of a
A. fission reaction.
B. chain reaction.
C. fusion reaction.
D. chemical reaction.
Answer: C
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A 4.00 kg mass is located at (2.00 m, 2.00 m, 0.00 m) and a 3.00 kg mass is located at (–1 m, 3.00 m, 0.00 m). If this system of masses rotated about the Y-axis perpendicular to the X-Z plane, then the moment of inertia of this system is
A. 40 kg 
B. 32 kg
C. 29 kg
D. 24 kg
E. 19 kg
The concept of seafloor spreading states that
A) Earth is expanding. B) seafloor is created at mid-ocean ridges and destroyed at deep ocean trenches. C) sea level is rising. D) earthquakes occur underwater.
The energy level diagram for hydrogen
The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is
a.
1.5 eV.
b.
1.9 eV.
c.
3.4 eV.
d.
10.2 eV.
e.
13.6 eV.
Light of wavelength 105 nm falls on a metal surface for which the work function is 5.00 eV. What is the minimum de Broglie wavelength of the photoelectrons emitted from this metal?
(h = 6.626 × 10-34 J ? s = 4.14 × 10-15 eV ? s, c = 3.00 × 108 m/s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J) A) 0.24 nm B) 0.33 nm C) 0.47 nm D) 0.66 nm E) 0.94 nm