What happens to most of the solar neutrinos between the Sun's core and Earth?
What will be an ideal response?
Two-thirds of them decay into a new form, only recently observed by Japanese physicists.
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A watch dial that continues to glow after a week in the dark is almost certainly
A) fluorescent. B) phosphorescent. C) polarized. D) radioactive.
Imagine placing two long wires parallel to each other. If conventional currents flow through them in the directions shown, will the wires attract, repel, or exert no net force on each other?
A. Attract each other
B. Repel each other
C. Exert no net force on each other
Suppose the Hubble constant turned out to be 130 km/sec/Mpc and not 65 km/sec/Mpc. How would that affect our estimate of the age of the Universe?
A. The Universe would be about 7 billion yrs old. B. The Universe would be about 30 billion yrs old. C. It would have no effect on our estimates of the Universe's age. D. The Universe would be about 130 billion yrs old. E. None of these choices is correct.
What is the Physics Primer?
A. A set of mathematics topics that are relevant to introductory physics courses. B. A list of the most important formulas used in introductory physics courses. C. A detailed explanation of all of the mathematics you will use in your introductory physics course. D.A tutorial of the most important physics concepts covered in introductory physics courses