A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0 cm, we must apply a force of magnitude 370 N to hold it there. We pull the block to x = 13.0 cm and then release it. How much work does the spring do on the block when the block moves from x; = +6.0 cm to (a) x - +4.0 cm, (b) x = -4.0 cm, (c) x= -6.0 cm, and (d) x =-10.0 cm? X=0 Block F-0 attached - 1080 0800 to spring (a) x positive d F negative F X- (b) d x negative F E positive ( c)