Power is the ratio between energy and time:

In our problem we have E=76 J and t=3.7 s. Therefore, the power is
It helps the cell by making sure everything gets circulated throughout the cell.
Aluminum has 3 valence electrons.
<span>You can figure out the valence electrons by looking at its group number. Aluminum is in group 3, so it has 3 valence electrons.
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The acceleration due to gravity is 1.62m/s^2, this is because the moons gravity is 1/6th that of Earth's (9.81m/s^2) hope this helps! you could also use Newton's law of gravity, F=GM/R^2 where g is the universal gravitational constant, M= mass of the object and R=radius. There should be a neg sign in front of the equation since objects in free fall fall downwards from the given object. Hope this Helps........
Multiply the density with the volume. You get 2418.2 grams or 2.4182 kilograms :)