Superman pulls on a steel post to trap a supervillain. The post has a cross-sectional area of 30cm"2 and a length of 2m. If Superman applies a force of 6X10"6N by how much is the length of the post increased? O a) 7mm O b) 2mm @ c) 1.5cm Q d) 1.20m 0 e) 1.9cm A force of 2000N is applied downward onto a square metal plate with sides of length 20cm. What is the pressure on the plate? O a) 2,000Pa (9 b) 10,000Pa O c) 50,000Pa Q d) 100Pa G e) 25,000Pa