Question

suppose the blades of a wind turbine generator speed up in a clockwise direction. what is the sign of the average angular velocity of the blades? notes: clockwise is negative while counterclockwise is positive. multiple choice positive at first, then negative. negative at first, then positive. positive, since the blades are speeding up. negative, since the blades are rotating in a negative clockwise direction.

Explanation:

The note states clockwise is negative. The blades rotate clockwise, so their angular velocity's sign is negative, matching the last option's reasoning.

Answer:

D. Negative, since the blades are rotating in a negative clockwise direction. (Assuming the last option is D; adjust identifier if needed, but the text is "Negative, since the blades are rotating in a negative clockwise direction.")