15. A quantum particle has a wavelength of 6.80 x $10^{-14}$ m and a mass of
6.96 x $10^{-27}$ kg. At what speed is the particle travelling?
A) 1.90 x $10^5$ m/s
B) 1.40 x $10^6$ m/s
C) 3.00 x $10^8$ m/s
D) 8.75 x $10^{24}$ m/s
16. In the Large Hadron Collider, *
A) neutrons are accelerated to high speeds.
B) protons are directed along a circular path using magnetic fields.
C) relativistic effects can be neglected.
D) electrons collide at high speeds.
E) electric fields accelerate positrons to high speeds.
17. Two hydrogen atoms combine with an oxygen atom to form water,
sharing electrons in the process. Which of the following particles is
responsible for mediating the force interactions during this transformation?
A) gluon
B) W boson
C) Z boson
D) photon
18. A difference between mesons and baryons is that *
A) a baryon is matter, while a meson is antimatter.
B) a baryon contains three quarks, while a meson contains two quarks.
C) a baryon is a type of hadron, while a meson is a type of lepton.
D) a baryon is a type of fermion, while a meson is a type of boson
