If the energy stored in the fully charged battery is used to lift the battery wi

Question

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2 and is constant with height. Express your answer to three significant figures and include the appropriate units. If the stored energy is used to accelerate the battery with 100 percent efficiency, what velocity is attained? Express your answer to three significant figures and include the appropriate units. Gasoline contains about rho t = 4.5 Times 107 J/kg. Compare this with the energy content per unit mass for the fully charged battery ( rho 2). Express your answer using three significant figures.

Explanation / Answer

a)total energy in battery is E and mass of battery is M them Mgh=E given M,g,E calculate H b) 0.5M v^2= Mgh we have height calculated above and g, so v=sqrt(2gh)

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