A polymer beam was designed to sit on three supports, but th…

A polymer beam was designed to sit on three supports, but the middle support was accidentally placed 0.3 mm lower than the others. Determine the magnitude of the vertical reaction force at B after moment M = 0.68 N·m is applied and causes the beam to rest on all three supports. Let a = 58 mm, b = 58 mm, and EI = 1.05 N·m2. Assume that the supports allow rotation, no deflection at A and C, and no additional deflection at B.

A Python application is being developed to manage user accou…

A Python application is being developed to manage user accounts. The application needs to insert new user data into a database, but the developers are concerned about preventing malicious users from manipulating SQL queries through input fields (e.g., by inserting ‘; DROP TABLE users; — into a username field). Question: What is the most effective and industry-standard method in Python DB-API 2.0 to protect against SQL injection vulnerabilities when executing DML statements?