Which of the following depends on the observer's frame of reference?
A) the mass of the proton
B) the length of a meter stick
C) the half-life of a muon
D) all of the other answer choices
D
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In 1632, which book did the Inquisition order sales to be stopped?
a. De Revolutionibus b. Stederreus Nunctus c. Dialogo d. De Stella Nova e. Astronomia Nova
Stars with ˜0.4-4 solar masses swell into giants when hydrogen is exhausted in their centers
a. True b. False Indicate whether the statement is true or false
A uniform rod (length = 2.0 m) is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through the rod at a point 0.50 m from one end of the rod. If the rod is released from rest in a horizontal position, what is the angular speed of the rod as it rotates through its lowest position?
a. 3.5 rad/s b. 3.8 rad/s c. 4.1 rad/s d. 2.0 rad/s e. 5.6 rad/s
In 2.0 s, a particle moving with constant acceleration along the x axis goes from x = 10 m to x = 50 m. The velocity at the end of this time interval is 10 m/s. What is the acceleration of the particle?
a. +15 m/s2 b. +20 m/s2 c. -20 m/s2 d. -10 m/s2 e. -15 m/s2