The half-life of 30P is 2.50 minutes. If a sample of 30P has 
nuclei present, what is its activity?
a. 
b. 
c. 
d. 
e. 
b.
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Two cars go around a banked curve at the proper speed for the banking angle. One car has tires with excellent traction, while the other car has bald slippery tires
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