If in the future significant amounts of antimatter could be made, it might be prevented from annihilating with ordinary matter by containing it in
A) a magnetic field
B) a gravitational filed
C) an electric field
D) a wormhole
A
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Phobos is the smallest moon of Jupiter
Indicate whether the statement is true or false
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.
Nuclear Reactions: In the fission reaction 235U + 1n ? 141Ba + 92Kr + x 1n, what is the number x of neutrons produced?
A. 0 B. 1 C. 2 D. 3
The planet which shows us the widest range of surface temperatures between day and night is
A) Earth. B) Mercury. C) Mars. D) Venus. E) our Moon.