According to the current theory or "standard model" of elementary particles, which one of the following is truly an "elementary" particle?
A) electron
B) neutron
C) proton
D) All of the above.
E) None of the above.
A
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Evaporation is when a gas is converted into a liquid
a. True b. False Indicate whether the statement is true or false
Kepler's Laws: The planet Jupiter is 7.78 × 1011 m from the sun. How long does it take for Jupiter to orbit once about the sun given that the distance from the earth to the sun is 1.50 × 1011 m?
A. 2.3 years B. 5.2 years C. 6.0 years D. 12 years E. 27 years
Where on the H-R diagram are the majority of stars that dominate the night sky?
What will be an ideal response?
A proton, moving west, enters a magnetic field. Because of this magnetic field the proton curves upward. We may conclude that the magnetic field must have a component
A) towards the west. B) towards the east. C) towards the south. D) towards the north. E) downward.