Please explain:

A new operating system uses passwords that consist of four characters. Each character must be a number from 0-9. For example, three distinct possible passwords are 0102, 1189, 3456. The system uses 32-bit salt values. The system also allows one login attempt every second and never locks out users regardless of how many failed attempts occur.

An adversary has learned there is an account with username Bob and the adversary attempts to login as Bob. If using a brute force attack, what is the expected amount of time (in second) to crack Bob's password?

An adversary has learned there is an account with username Bob and the adversary can attempt to login as Bob. If the adversary uses a brute force attack, what is the expected amount of time to crack Bobs password? (enter a decimal number of seconds)