How much mass does the Sun lose through nuclear fusion per second?
A) 4 tons
B) 4 million tons
C) 600 tons
D) 600 million tons
E) Nothing: mass is conserved.
B
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The number of Bohr magnetons per atom for Co is 1.72. Calculate the saturation magnetization for Co.
What will be an ideal response?
Polymers, such as epoxy, with cross-links are _____________polymers that do not soften when heated.
Fill in the blank(s) with the appropriate word(s).
In which type of radioactive decay does the atomic number of the parent nucleus change?
A) the atomic number changes in all three types of decay B) electron capture C) beta decay D) alpha decay
Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?
a. t2 > t1 b. t2 < t1 c. t2 = t1 d. t2 = 2t1 e. t2 = 0.5t1