How is physics related to dental hygiene?

Physics

1 answer:

Free_Kalibri [48]3 years ago

7 0

Both deal with the biology of the tissue in your mouth and the synthetic material that the tools are made of.

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3 years ago

Determine a submarines acceleration if it's initial velocity is 9.0 m/s and it travels 1.54 km in 2 min

julia-pushkina [17]

$acceleration=\frac{\Delta v}{\Delta t}\\\\ \Delta t=2min=120s\\\\s=1,54km=1540m\\\\
acceleration=\frac{v_{f}-v_{i}}{\Delta t}\\\\
\Delta v=\frac{s}{t}\\
v_{f}-v_{i}=\frac{s}{t}\\
v_{f}=\frac{1540}{120}+9=21,83\frac{m}{s}\\\\
accleration=\frac{21,83-9}{120}=\frac{12,83}{120}=\boxed{0,107\frac{m}{s}}$