Astudent measures the gravitational acceleration g to be 9.76±0.07 m/s2. to improve his precision he spend a whole day repeating the measurement 400 times. he states the mean of the 400 measurements g 9.746 m/s2 as his best estimate of g. in the lab g has an accepted value of g- 9.80664 t0.2 m/s2 arising from a precision measurement conducted by geo-physicists in the past.

Ithink the answer would be 1,350!

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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.