When an unstable Lutetium nucleus undergoes beta decay, the nucleus formed is that of
a. Lutetium.
b. Tantalum.
c. Ytterbium.
d. Thulium.
e. Hafnium.
e
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Resistance and Resistivity: Which one of the following quantities is equivalent to 1 ??
A. 1 J/s B. 1 W/A C. 1 V ? A D. 1 V/A E. 1 A ? s
A proton starting from rest travels through a potential of 1.0 kV and then moves into a uniform 0.040-T magnetic field. What is the radius of the proton's resulting orbit? (mproton = 1.67 × 10-27 kg, e = 1.60 × 10-19 C)
A) 0.080 m B) 0.11 m C) 0.14 m D) 0.17 m E) 0.19 m
A mass m is attached to a vertical spring with a force constant k, it oscillates with a period T. If the spring is cut to one third of its original length and the same mass is attached to it, the new period of oscillation will be
A) less than T. B) greater than T. C) equal to T. D) It could be greater or less than T, depending on how you cut the spring.
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 2sin(4x)cos(3t), where x is in m and t is in s. What is the speed (in m/s) of the interfering waves?
A. 0.75 B. 0.25 C. 1.3 D. 12 E. 3.0