Answer:
Step-by-step explanation:
a. The compression over the other spring depends of the force that the first spring applies to the block


This force allow us to calculate the compression in the other spring

b. We use the expression for the maximum velocity

where A is the amplitude 0.1m and w is the angular frecuency, which is calculated

thus

c. Here it is necessary to take into account the change in the kinetic energy due to the work done by the friction force

The energy of the block at the moment of starting to compress the other spring is

This energy will be potential energy of the other spring, hence

and by taking x' of this las expression we have

I hope this is useful for you
Regards