According to the law of conservation of energy, A)
an object loses most of its energy as friction.
B)
the total amount of energy for a system stays the same.
C)
the potential energy of an object is always greater than its kinetic energy.
D)
the kinetic energy of an object is always greater than its potential energy.

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

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If the woman is just hanging off the bar then i think each arm will support 350n  and if she accelerates 1400n