The student repeats the measurements and obtains more values of the acceleration : 5.15 m s 2 , 4.22 m s 2 , 4.63 m s 2 , 3.92 m s 2 , 4.58 m s 2 , 4.27 m s 2 . Calculate the best estimate of a and the random uncertainty of these results (dont forget to include the very first value from part c).

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

a.   mass number from atomic number

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.