PLEASE HELP QUICKLY A student wants to lift design a wheel and axle to lift a 400 N bucket of water from the bottom of a well. She already has a wheel with a 50 cm radius, and she is able to
steadily apply an 80 N force. What should the radius of the axle be so that she can lift the bucket with this simple machine?

0.4 cm
64000 cm
10 cm
16000 cm

100 pounds is 100 pounds no matter the object or item being weighed

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.