A 2.0-m rope is lying on a table. You pick up one end and start raising it vertically. How high above the table is the center of mass (or center of gravity) of the rope when half of the rope has lifted off the table?
A) 0.25 m
B) 0.50 m
C) 0.75 m
D) 1.0 m
E) 1.5 m
Question 2
A piece of plastic has a net charge of +2.00 C. How many more protons than electrons does this piece of plastic have? (e = 1.60 10-19 C)
A) 1.25 1013
B) 1.25 1019
C) 2.50 1013
D) 2.50 1019
E) 3.01 1023