What behavior of muons moving through Earth's atmosphere was different compared to muons at rest in a way that helped confirm time dilation?
a. They moved a shorter distance in Earth's reference system than in their own.
b. Their size was smaller as seen from Earth's reference system.
c. Their arrival in Earth's atmosphere and their detection on the ground were no longer synchronized.
d. Their speed was different as seen in Earth's reference system and in the reference system in which they were at rest.
e. They lived longer as shown by traveling farther before decay in Earth's reference system.
e
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Which of the following NDI tests cannot detect an internal crack?
(a) Eddy current (b) Dye penetrant (c) X-ray (d) Ultrasonic pulse echo
Which of the following statements is not true about the Standard Model?
Pluto's density is most similar to:
A) the terrestrial planets. B) the jovian planets. C) moons of the jovian planets. D) Mercury, but nor Venus, Earth, or Mars. E) Saturn, but not Jupiter, Uranus, or Neptune.
Compared to a sound of 30 decibels, the intensity of a sound of 60 decibels is
A) twice as intense. B) 10 times as much. C) 100 times as much. D) 1000 times as much. E) 10,000 times as much.