Elements heavier than iron are formed mainly in supernovae
Indicate whether the statement is true or false
TRUE
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Suppose you were to try to create a proton-antiproton pair by annihilation of a very high energy photon. The proton and the anti-proton have the same masses, but opposite charges. What energy photon would be required?
A) 1.022 MeV B) 12.2 MeV C) 1880 MeV D) 940 MeV E) 223 MeV
Which of the following statements best describes the line of stability?
A student constructs an astronomical telescope with a magnification of 10. If the telescope has an objective lens of focal length 0.50 m, what is the resulting length of the telescope?
A) 53 cm B) 55 cm C) 60 cm D) 75 cm
A boat loaded with wood floats in a swimming pool. When the wood is thrown overboard, the pool level
A) rises. B) falls. C) remains unchanged.