A pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions traveling through the laboratory at a speed of 0.60 c is measured to have a mean lifetime of

A. 21 ?s.
B. 21 ns.
C. 31 ns.
D. 31 ?s.


C. 31 ns.

Physics & Space Science

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A(n) ____ is 1/60th of a minute of arc

a. precession b. second of arc c. degree d. nadir e. angular diameter

Physics & Space Science

The three graphs in the figures below represent the position vs. time for objects moving along the x-axis. Which, if any, of these graphs is not physically possible?

Physics & Space Science

A certain car can accelerate from 0 to 100 km/hr in 6.0 seconds. What is the average acceleration of that car in m/s2?

What will be an ideal response?

Physics & Space Science

The solubility parameter of a polymer is related to the energy of _____________for the polymer.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science