Write a for loop code which will.

a. Create column vector (with 4 random number generated using uniform distribution (rand))
b. Concatenate column vectors horizontally (essentially adding new columns to build the matrix. For the first loop, ignore this step)
c. Repeat 10 times * At the end, you should have 4x10 matrix

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600