Answer:

Explanation:
As we know by radioactivity law

so here we will have


now we will have


now we also know that



Answer: 810 J
Explanation: work W = F·s = 101 N · 8.0 m = 808 J
Force F = u mg = 101 N in which u is friction constant. Also mass is included in force.
Answer:
C. Converting Energy
Explanation:
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