The original nucleus and the final nucleus will be different isotopes of the same element for which decay scheme of the original nucleus?
a. alpha decay followed by two beta (electron) decays
b. two gamma decays
c. a beta (electron) decay followed by an alpha decay
d. a beta (electron) decay followed by neutron emission
a
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A film of index of refraction n1 coats a surface with index of refraction n2. When n1
A.
B.
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E.
Which of the following wavelengths could NOT be present as a standing wave in a 2 m long organ pipe open at both ends?
a. 4 m b. 2 m c. 1 m d. 0.89 m e. 0.5 m
If the velocity of an object is non-zero, can the acceleration of the object be zero?
A. Yes B. No
Assume the size of the Sun is represented by a baseball with the Earth is about 15 meters (150 million km or 8 light minutes) away. How far away, to scale, would the nearest stars to the Sun be? Choose the closest answer
a. about the distance between New York and Boston (330 km) b. 100 meters away c. about the distance across the United States from New York to Los Angeles (4300 km) d. about the distance across 50 football fields (50 × 100 m)