Which statement best describes what was called the solar neutrino problem?
A) Early experiments designed to detect solar neutrinos found them, but in fewer numbers than had been expected.
B) It referred to the fact that neutrinos are extremely difficult to detect.
C) Our understanding of fusion in the Sun suggested that neutrinos should be destroyed before they arrive at Earth, yet neutrinos were being detected.
D) No one understood how it could be possible for neutrinos to be produced in the Sun.
A
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In one word, how can water in the power plant of a nuclear submarine far exceed 100°C?
A) conductivity B) evaporation C) condensation D) pressure E) vaporization
In Figure 5.14, the mass of block C is closest to:
A) 5 kg B) 7 kg C) 9 kg D) 11 kg E) 13 kg
If the net force on an object is zero,
a. there must be no forces acting on the object b. the object must be at rest c. the object's acceleration must be zero d. there can be no friction acting on the object
Ultraviolet light is shone on a piece of metal that has a known work function, and electrons are observed being produced through the interaction of the light with the metal. The lamp that produces the light is now replaced with a lamp of the same intensity, but which produces photons having a shorter wavelength. Which of the below differences is observed?
A. Fewer electrons per unit time are produced. B. More electrons per unit time are produced. C. Nothing changes at all. D. Electrons with a higher maximum energy are observed. E. Electrons with lower maximum energy are observed.