How to Fix Car AC: A Complete Step-by-Step Guide
Learning how to fix car AC requires 10 steps: identify the system, test airflow and controls, check cooling fans, measure performance, find leaks, recover refrigerant, repair the fault, evacuate the system, recharge it by weight and verify cooling. Allow 30 minutes to five hours. Difficulty ranges from beginner to professional, and accurate diagnosis determines success. […]
How Much Force to Deploy an Airbag: Crash Thresholds Explained
To deploy an airbag, a vehicle’s crash sensors must detect a sustained deceleration of 3g to 5g and a change in velocity ($\Delta V$) of 8 to 14 mph within a 10-millisecond window. The Airbag Control Module evaluates this negative G-force rather than raw vehicle speed to determine if the impact severity requires a supplemental […]