Answer:
I think it is B. the first and third bulb would both light up.
A. The first and third light bulb would not light up.
Explanation:
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Models,Mathematics
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1. 37.8J
2. 18 Billion Joules, 18 Gigajoules
3. 9.81 Billion Joules, 9.81 Gigajoules
Use the formulas provided,
KE=(1/2)mv^2 and PE=mgh, noting that g=9.81
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