Which term refers to the capability of doing work?

Which term refers to the capability of doing work?

• A. Frequency
• B. Energy
• C. Fractional bandwidth
• D. Half value layer

Answer: (B)

Energy is the ability to do work. Work happens when a force moves something a distance, and energy is the capacity behind that potential. In ultrasound, acoustic energy is the energy the wave can transfer to tissue, which can cause effects like movement of particles or heating. Power describes how quickly that energy is delivered, while energy itself is the total capacity to perform work. The other terms refer to how the wave behaves or how materials interact with it (frequency of oscillation, bandwidth of the signal, and penetration/attenuation properties), not to the general capacity to do work.

Energy is the ability to do work. Work happens when a force moves something a distance, and energy is the capacity behind that potential. In ultrasound, acoustic energy is the energy the wave can transfer to tissue, which can cause effects like movement of particles or heating. Power describes how quickly that energy is delivered, while energy itself is the total capacity to perform work. The other terms refer to how the wave behaves or how materials interact with it (frequency of oscillation, bandwidth of the signal, and penetration/attenuation properties), not to the general capacity to do work.