The half-life of a muon is 2.2 ?s. How fast is it moving relative to an observer who says its half-life is 4.4 ?s?
A. 0.87c
B. 0.75c
C. 0.97c
D. 0.72c
E. 0.50c
Answer: A
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An object moves by an observer at 0.400c. The total energy of the object will be what factor times that of the rest energy?
a. 1.19 b. 1.44 c. 1.09 d. 1.20 e. 1.38
Which of the following procedures would not be expected to increase the yield strength of LDPE?
(a) Quenching the LDPE to room temperature from the liquid state (b) Increasing the crystallinity (c) Increasing the molecular mass (d) Decreasing the side branching
Which of the following correctly lists the terrestrial worlds in order from the most atmospheric gas to the least? (Mercury and the Moon are listed together since their atmospheres have very similar amounts of gas.)
A) Venus, Earth, Mars, Mercury/Moon B) Earth, Venus, Mars, Mercury/Moon C) Mars, Venus, Earth, Mercury/Moon D) Venus, Mars, Mercury/Moon, Earth
To reach the nearest known exoplanet using current technology would take:
A) a matter of months. B) 4.4 years. C) about a century. D) about 40,000 years. E) close to a million years.