A metal rod and a metal ball more submerged in H2O

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Megaevelie
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A metal rod and a metal ball more submerged in h2o, such that one end of the rod is adjacent to the ball. if the h2o will be heated from 30 k to 65 k, what is the acceleration of the ball? the initial length of the rod is 6 m.

Vball= 6 cm3
Vrod= 9 cm3
Crod= 13 cal/g.c degrees
Cball= 8 cal/g.c degrees
Ch2o= 1.0 cal/g.c degrees
Mball= 60 g
Mrod= 607 g
α= 0.005/c degrees


Topic is about Hydrostatic

I was absent during the assigning of this homework. I really need help! Thank you! :)
 
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