The solution to the solar neutrino problem was
A) the Sun's core is cooling down, producing less neutrinos that expected.
B) 2/3 of the neutrinos transform into a new type during the 8-minute trip to Earth.
C) the corona is opaque to much of the neutrino radiation.
D) the Earth's ozone layer absorbs 2/3 of the neutrinos in transit.
E) our solar energy equations were just wrong, and needed much reworking.
B
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Which of these Galilean satellites is most geologically active?
a. Io b. Europa c. Callisto d. Ganymede
In materials like glass or water, the speed of light is ________.
A. increased B. reduced C. the same as in a vacuum D. sometimes reduced and sometimes increased
Do explosions conserve momentum?
A. No, because objects can go from stationary to moving. B. Only for rockets. C. Only if the original object is stationary. D. Yes, because all forces are internal to the system.
Consider a situation where two moving objects collide, stick to each other, and move off together. Kinetic energy is definitely not conserved
Indicate whether the statement is true or false