Aspecial standard weight, known to weight 10 n to high accuracy, is used to check the accuracy of two spring scales. on the first scale the weight gives a reading of 8.4 n. on the second scale the weight gives a reading of 9.1 n. the percent difference between the measurements of the two scales is %. (never negative.)

16 % and 9 %

Explanation:

Accurate reading = 10 N

reading of first balance = 8.4 N

reading of second balance = 9.1 N

Percentage difference in first reading

=

= = 16 %

Percentage difference in second reading

=

= = 9 %

when it gains or loses electrons

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.