Final answer:
The statement regarding Class P harnesses having integral body belts is true, as these are for work positioning and can include body belts. The concept of a work function does not fit with the classical wave model; it relates to quantum mechanics, making the second statement false.
Step-by-step explanation:
The statement 'Class P - Work Positioning Class P harnesses may include integral body belts' is True. In the context of safety harnesses, Class P refers to personal fall arrest systems which are designed for work positioning and may indeed have integral body belts. These belts help hold the wearer in place while allowing some movement, hence assisting in tasks that involve heights, such as construction work.
To address the second part, 'The concept of a work function (or binding energy) is permissible under the classical wave model.' This is False. The concept of a work function is associated with the quantum mechanical model of atoms, where it refers to the minimum energy needed to remove an electron from a solid surface. It cannot be explained by the classical wave model, which predates quantum mechanics and does not include the concept of quantized energy states.