Characteristics of Waves: A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
A. 0.93 Hz
B. 0.00026 Hz
C. 1.1 Hz
D. 6.8 Hz
E. 0.15 Hz
Answer: B
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If a nucleus has excited states above the ground state at 300 keV, 200 keV, and 80 keV, what gamma rays (in keV) may be expected from a collection of these excited nuclei? Choose the most complete set.
A. 300, 200, 80 B. 300, 200, 120, 80 C. 100, 120, 80 D. 300, 120, 200, 80, 180 E. 300, 220, 200, 120, 100, 80
A bullet shot straight up returns to its starting point in 10 s. What is the initial speed of the bullet?
A. 98 m/s B. 49 m/s C. 25 m/s D. 9.8 m/s
In a certain nuclear reactor, neutrons suddenly collide with deuterons, which have twice the mass of neutrons
In a head-on elastic collision with a stationary deuteron, what fraction of the initial kinetic energy of a neutron is transferred to the deuteron? A) 1/2 B) 1/3 C) 3/4 D) 5/6 E) 8/9
In the Lawson number what do the n and stand for?
a. ion density, critical ignition temperature b. ion density, confinement time c. neutrino density, confinement time d. ion density, critical ignition temperature e. neutrino density, reaction mean life