Which type of explosive deflagrates at less than 3300 feet per second?

The correct answer is related to the properties of explosive materials, particularly how they react when detonated. Low explosives are characterized by their deflagration, which is a rapid but subsonic combustion process. They typically burn at velocities less than 3300 feet per second, making them suitable for applications such as propellants in firearms or fireworks.

In contrast, high explosives detonate at supersonic speeds, which means they are capable of producing a shock wave and a much more violent reaction. C-4 is a specific type of high explosive and falls under the category where the detonation velocity exceeds this threshold. Blasting agents are generally less sensitive and require a strong detonator to initiate and are also designed to operate under specific conditions, often with a slower deflagration speed than traditional high explosives.

Understanding these distinctions is crucial for safe handling and application in various contexts, such as military use, construction, and demolition, as well as in law enforcement investigations regarding explosives.