The figure below shows the unusual path of a confused football player. After receiving a kickoff at his own goal, he runs downfield to within inches of a touchdown, then reverses direction and races back until he’s tackled at the exact location where he first caught the ball. During this run, which took 25 s, what is his displacement?
3
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Polarization is a property of
A) transverse waves. B) longitudinal waves. C) both of these D) neither of these
In superstring theory the fundamental objects from which all forces and matter are built are:
a. Planck lengths. b. gravitons. c. gluons whose size of about 10^-25 m is the smallest distances in nature. d. loops of material that cannot be further subdivided, whose size of about 10^-35 m is the smallest distance in nature. e. quarks whose size of about 10^-25 m is the smallest distance in nature.
A particle with an integer spin is a
a. boson b. lepton c. fermion d. hadron e. muon
Charge of uniform density 4.0 nC/m is distributed along the x axis from x = ?2.0 m to x = +3.0 m. What is the magnitude of the electric field at the point x = +5.0 m on the x axis?
A. 16 N/C B. 13 N/C C. 19 N/C D. 26 N/C E. 5.0 N/C