When a proton and an antiproton collide
a. they destroy each other and produce energy in the form of gamma rays.
b. one of the protons is converted to a neutron and they form nucleus of one proton and one neutron.
c. one of the protons is converted to an electron and they form a hydrogen atom.
d. one proton is converted to a neutron and the other is converted to an electron.
e. A proton and an antiproton can not collide because the Coulomb barrier is too great.
A
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Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much
A) inertia. B) mass. C) volume. D) all of the above E) none of the above
Which Jovian moon shows the most diverse terrain, suggesting a violent impact broke it into many pieces, some of which reformed it as a jumbled puzzle?
A) Ganymede B) Triton C) Io D) Enceladus E) Miranda
Coulomb's Law: Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude F due to the other. With time, charge gradually diminishes on both spheres by leaking off. When each of the spheres has lost half its initial charge, what will be the magnitude of the electrostatic force on each one?
A. 1/16 F
B. 1/8 F
C. 1/4 F
D. 1/2 F
E. 1/
F
A 2.00-kg block of ice at 0.00°C is dropped into a very large lake at 25.0°C and completely melts. For water, the heat of fusion is 3.35 × 105 J/kg,
the heat of vaporization is 2.25 × 105 J/kg, and the specific heat is 4190 J/kg?K. The net change in entropy of the system consisting of the ice and the lake due to this melting process is closest to A) 2.45 × 103 J/K. B) 2.24 × 103 J/K. C) 2.06 × 102 J/K. D) -2.45 × 103 J/K. E) -2.06 × 102 J/K.