The neutron decays into a proton, electron, and an electron antineutrino. Into what does the antineutron decay?
A. a proton, positron, and electron antineutrino
B. an antiproton, positron, and electron neutrino
C. a proton, electron, and electron antineutrino
D. an antiproton, electron, and electron neutrino
E. an antiproton, electron, and electron antineutrino
B. an antiproton, positron, and electron neutrino
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In a solid, the average kinetic energy is equal to the average _____________energy.
Fill in the blank(s) with the appropriate word(s).
Without the protection of the Earth's magnetic field, most of the atmosphere would by now have
A) been lost into space B) frozen onto the surface C) dissolved in the oceans D) been destroyed by chemical reactions
Simple Harmonic Motion: The figure shows a graph of the position x as a function of time t for a system undergoing simple harmonic motion. Which one of the following graphs represents the acceleration of this system as a function of time?
A. graph a B. graph b C. graph c D. graph d
If a = 3.0 mm, b = 4.0 mm, Q1 = 60 nC, Q2 = 80 nC, and q = 24 nC in the figure, what is the magnitude of the electric force on q?
a.
2.7 N
b.
1.9 N
c.
2.3 N
d.
1.5 N
e.
0.52 N