In the investigation " magnetic effects of current", when you moved the compass around the filed lines, they compass . A. Pointed in the direction of the field lines.
B. Pointed in the opposite direction of the field lines.
C. Pointed perpendicular to the direction of the field lines.
D. Pointed away from the direction of the field lines.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

i think its 100.

hope this !

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)