Answer:
the waves carry energy
Explanation:
this is the way you can write it in short manner
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Different
The hollow one will expand even more making it have a larger volume then the solid one so they are different
3000 J
1.6 J
Work = change in energy
W = ΔKE
Fd = KE
(0.8 N) (2 m) = KE
KE = 1.6 J
In any case, your mass would be<em> 68 kg </em>no matter what
